Since that time, hundreds of astronauts have been into orbit, but none has ventured further.
从那时起，已经有数百名宇航员进入轨道，但是，没有人再做进一步的尝试。
If the Earth is stopped in its orbit what time will it start up again.
如果地球在其轨道上停转了，那什么时候它又会开始转起来？
Time orbit we just one solitude of the subway.
时候的轨道里我们仅仅一班孤寂的地铁。
An electron moving in an excited orbit stays there only for a very short time.
电子在激发态轨道上只能逗留很短的时间。
An electron moving in an excited orbit stays there only for a very short time.
电子在激发态轨道上只能逗留很短的时间。
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