周末在英国一个驻有美国轰炸机的空军基地究竟发生了什么，围绕此事的疑云反而更加浓重。
The mystery surrounding what happened over the weekend at a U.K. air base housing U.S. bombers has only deepened.
五名男子的获释令最初的说法受到质疑，也让大西洋两岸的官员们困惑不已。
The release of the five men has raised questions about the initial narrative and has left officials on both sides of the Atlantic scratching their heads.