msec

例句：

1. 1. The camera's shutter clickedtwice in a millisecond.
   相机的快门在一瞬间就拍了两次。
2. 2.He was so fast that he caught theball before the opposing team could even react.
   他反应如此之快，以至于对方队伍还没反应过来，他就抓住了球。
3. 3. The scientistused a microscope to observe the microscopic world.
   这位科学家用显微镜观察微观世界。