公众正逐步了解到周末英国皇家空军费尔福德基地附近发生了什么，但许多疑问仍未得到解答。
The public is slowly getting more information about what happened near the RAF Fairford airbase at the weekend - but many questions remain unanswered.
我们知道，凌晨曾有人两次报警称发现可疑车辆；随后，五名均为20多岁的英国国民因涉嫌爆炸品和恐怖主义犯罪而被捕。
We know that two early-morning calls were made to police about suspicious vehicles, and that five men, all British nationals in their 20s, were arrested on suspicion of explosives offences and terrorism offences.
我们还知道，他们后来获准保释。BBC了解到，其中一人就是首位拨打999紧急电话的人。英国首相安迪·伯纳姆如今表示，英国政府认为伊朗“参与”了此次事件。以下是目前为止我们所了解的事件经过，以及事发数日来的情况。
We also know they were later released on bail, and the BBC understands that one of the men was the first 999 caller. Prime Minister Andy Burnham has now said the UK government believes Iran "played a part" in the incident. Here is what we know about how the incident unfolded, and what has happened in the days since.
我们现在知道，在事件发生前的几天里，英国皇家空军费尔福德基地周围的安保措施有所加强。该基地是英国最重要的军事设施之一，供美国空军使用。
We now know that in the days leading up to the incident, security was increased around RAF Fairford, one of the UK's most important military sites which is used by the US Air Force.
此外，周六晚上曾有报道称，基地周边警方活动增多。几个小时后，有人向警方报告了三辆可疑车辆。
There were also reports of heightened police activity around the base on Saturday evening, hours before three suspicious vehicles were reported to police.
格洛斯特郡警方称，他们于9月27日星期日午夜刚过接到报案，称有“三辆可疑车辆”似乎正驶向英国皇家空军费尔福德基地。
Gloucestershire police say they received a call just after midnight on Sunday 27 September about "three suspicious vehicles" that appeared to be travelling towards RAF Fairford.
BBC目前了解到，后来被捕并获准保释的五名男子中，有一人正是这通报警电话的拨打者。
The BBC now understands that one of the five men who was later arrested and then bailed had made the call himself.
将近一小时后，一名住在基地附近的农妇看到三辆厢式车以“奇怪的队形”停放，于是拨打了999紧急电话。
Nearly an hour later, a farmer living close to the base called 999 after seeing three vans parked in a "weird formation".
她告诉英国广播公司第四频道《今日》节目，厢式车附近有一“大群戴兜帽、蒙面的人”，他们看到她后开始“惊慌失措”。这名女子一直保持匿名。她说，起初她试图联系费尔福德基地的英国国防部警方，但无人接听，因此才拨打了999。“不到10分钟，村里就到处都是武装警察。”她说。
There was "a large group of hooded and masked men" near the vans who started to "panic" when they saw her, she told Radio 4's Today programme The woman, who has remained anonymous, said she initially tried to contact the Ministry of Defence police at RAF Fairford, but no one picked up, so she dialled 999. "Within 10 minutes the village was full of armed police," she said.
不久之后，尽管具体时间尚不清楚，格洛斯特郡警察局在紧邻基地的惠尔福德村逮捕了五名男子。他们因涉嫌违反《爆炸物法》而被逮捕。
Shortly afterwards - although the exact time is unknown - Gloucestershire Constabulary arrested five men in the Whelford area, a village right next to the base. They were arrested on suspicion of committing offences under the Explosives Act.
一张质量较差的图片显示了被捕的瞬间：五名男子赤裸上身、戴着手铐，由警察看守着坐在地上。
A grainy image purporting to show the moment of arrest shows five men sitting on the ground, shirtless and in handcuffs under guard by police officers.
BBC虽然无法核实该图片的原始来源，但通过技术手段确认了其真实性。
The BBC has been unable to verify the original source, but BBC Verify has geolocated the image and confirmed it appeared to be authentic.
日出后，警方宣布这起事件属于“重大事件”，并在涉事车辆周围设置了400米（1,312英尺）长的警戒线。
After sunrise, police declared a major incident in Whelford and set up a 400m (1,312ft) cordon around the three vehicles.
英国军队的爆炸物处理小组被派往现场进行调查；航拍照片显示，一名遥控机器人正在靠近几辆白色货车。大约85户居民被疏散到当地的休闲中心。
The Army's Explosive Ordnance Disposal unit was brought in to examine them, and aerial pictures showed a remote-controlled robot approaching some white vans. About 85 households in Whelford were evacuated to a local leisure centre.
一些居民表示他们对这起事件感到震惊，但同时也强调“社区的团结精神以及当地居民的支持非常出色”。截至周日下午，反恐部门确认他们正在主导调查。
Some residents said they had been "shaken by the incident" but that "community spirit and local support has been exceptional". By Sunday afternoon, Counter Terrorism Policing had confirmed it was leading the investigation.
该部门在声明中表示，这五名男子因涉嫌策划恐怖袭击而被进一步逮捕。
In a statement, it said the five men had been further arrested on suspicion of preparing a terrorist act.
副警长维基·埃文斯表示，调查仍处于初期阶段，呼吁公众通过官方渠道获取最新信息，切勿自行猜测。
The investigation was still in its early stages, Deputy Assistant Commissioner Vicki Evans said, and the public was asked "to follow official channels for updates" and not to speculate.
英国时间下午4点左右，美国总统唐纳德·特朗普对记者表示，这五名嫌疑人的逮捕“非常出色”，称“这是一项了不起的成就”。
At about 16:00 BST, US President Donald Trump told reporters the arrest of the five suspects was "fantastic" and "an amazing job". "We had them under investigation.
特朗普称：“我们早就对他们进行了监视；他们企图对我们的设施造成严重破坏，与英国方面的合作非常成功……我们终于将他们抓获了。”
They were looking to do big damage to our fort and working with the British worked out great... We had them under view for a long time, and we got them."
美国与这起事件有关联，因为其空军在RAF Fairford基地开展行动，并曾利用该基地对伊朗实施打击。
The US is connected to this incident because its air force operates RAF Fairford, and has used the base to carry out strikes against Iran.
周一中午左右，反恐部门公布了更多关于被捕五名男子的信息：他们均来自伦敦，年龄在23至25岁之间。
At about noon on Monday, counter-terror police released more information on the five men who had been arrested - they were all from London and aged between 23-25.
在一份声明中，反恐警察部门表示，这些男子是根据《警察与刑事证据法》（Police and Criminal Evidence Act, PACE）被拘留的，并且他们的拘留期限已经得到了延长。在韦尔福德（Whelford），警戒线依然处于设置状态。
In a statement, Counter Terrorism Policing said they were being held under the Police and Criminal Evidence Act (PACE) and that a custody extension has been secured. A cordon remained in place in Whelford.
然而，几小时后反恐警察部门宣布，在经过“广泛的询问和调查”后，这五名男子将被允许以警方提供的保释金获释。
Within hours, however, counter-terror police announced that all five men would be released on police bail after "extensive interviews and enquiries".
助理警长劳伦斯·泰勒（Laurence Taylor）强调，这些男子在行动和与他人接触方面受到“严格限制”；他补充说：“他们仍在接受调查，因为我们正在探索多条可能的调查线索。”
Assistant Commissioner Laurence Taylor stressed that the men were subject to "stringent conditions on their movement and contact with others." "They absolutely remain under investigation as we explore multiple lines of enquiry," Assistant Commissioner Laurence Taylor said.
特朗普在白宫表示对这一决定感到质疑，称“对他们被释放感到惊讶”，并称：“我不会这么做。”
Speaking from the White House, Trump questioned the decision, saying he was "surprised that they released them", adding: "I wouldn't have done that."
周一下午，首相主持了一场紧急会议，敦促民众“在当局查明全部事实之前不要妄加猜测”。
Also on Monday afternoon, the prime minister chaired a Cobra meeting and urged people "not to speculate while the authorities establish the full facts".
劳伦斯·泰勒为这一决定辩护，称其“基于丰富的经验以及对警方执法权力的慎重考量”。
Taylor defends the decision, saying it was "grounded in experience and careful consideration of policing powers".
周一晚些时候，美国国务卿马可·卢比奥（Marco Rubio）在接受福克斯新闻（Fox News）采访时表示，这起事件“显然涉及外国势力的参与”，但并未提供任何证据或进一步细节。
Later on Monday, US Secretary of State Marco Rubio told Fox News that the incident "clearly involves the hands of a foreign actor", but did not provide evidence or further details.
反恐警察部门在周二晚间再次发布最新消息，称作为调查的一部分，伦敦的一些场所已经接受了搜查，但未透露更多具体信息。
Counter-terror police gave another update on Tuesday evening, saying properties in London had been searched as part of the investigation. No further details were given.
助理警长泰勒还表示，这三辆车辆在军方和法医专家的协助下接受了“全面检查”。
The three vehicles had also undergone an "extensive examination" with the support of military and forensic experts, Assistant Commissioner Taylor said.
反恐警察部门负责人表示，在这些车辆中并未发现任何简易爆炸装置，但确实查获了一定数量的汽油。
The Counter Terrorism Policing boss said that no improvised explosive devices were found in the vans, but a "quantity of petrol" was recovered.
三天后，英国广播公司（BBC）获悉，其中一名被捕的男子是第一个拨打999报警的人。目前尚不清楚该男子为何报警，也不知道他向警方说了什么。周三，格洛斯特郡警方解除了警戒线，并重新开放了事发现场。
Three days on, the BBC has learned that one of the men who had been arrested had made the first 999 call It remains unclear why the man called police, or what he told them. Also on Wednesday, Gloucestershire Police removed the cordon and reopened the scene.
几小时后，安迪·伯纳姆首相对英国广播公司（BBC）表示：“有强有力的证据表明伊朗在这起事件中发挥了作用。”
A few hours later, Prime Minister Andy Burnham told the BBC that there were "strong indications that Iran played a part" in the incident.
“我们会在适当的时候公布更多细节，但可以确认的是……我们认为伊朗确实参与了此事，”他说道，不过并未提供进一步的证据或详细信息。德黑兰方面则坚决否认与此事有任何关联。
"We will say more in due course but we can confirm... that we believe Iran to have played a part," he said, without providing further details. Tehran has strongly denied any involvement.