| 例句 |
It's time for the watchmen to change off.警卫员换班的时间到了。Bob painted one patch of wall and then changed off with Tom.鲍勃粉刷了一片墙壁，然后交由汤姆接替粉刷。John and Bob changed off at driving the car.约翰和鲍伯轮流开车。John and Bill changed off at riding the bicycle.约翰和比尔轮流骑这辆自行车。 |