一个来自新加坡的小型研究团队击败了来自中国和美国的科学家，制造出了世界上最精确的原子钟。
A small Singaporean research team has beaten scientists in China and the United States to build the world’s most accurate atomic clock.
这台时钟使用了一种名为镥的稀有稀土金属离子制成，其精确度极高，每2600亿年才会误差一秒——这个时间几乎是宇宙年龄的20倍。
The clock, built with a single ion of a rare earth metal element known as lutetium, is so precise that it would lose one second every 260 billion years – nearly 20 times the age of our universe.
它的精确度是之前纪录保持者（由中国科学院武汉团队开发的钙离子时钟）的四倍左右。
It is about four times as accurate as the previous record holder, a calcium-ion clock developed by a Chinese Academy of Sciences team in Wuhan, and also surpasses an...