When a light passenger plane flew off course some time ago.
不久前，一架轻型客机偏离了航线。
The switch can only be either totally on or totally off at any given time. The same is true for the light.
开关在任何时候都仅仅是控制着完全开和关。灯也确实是一样。
If you find that you are always the last one to turn off the light in your office, it is high time you thought over seriously how you could avoid being the last one.
如果办公室里每天晚上最后一个关灯的人都是你，不如认真考虑一下：怎样才能不做最后一名？
If you find that you are always the last one to turn off the light in your office, it is high time you thought over seriously how you could avoid being the last one.
如果办公室里每天晚上最后一个关灯的人都是你，不如认真考虑一下：怎样才能不做最后一名？
应用推荐