Hold up: stop for a short time暂时停止；停顿；延续
The policeman held up the traffic to allow pedestrians to cross the road．
警察挡住车辆让行人过街。
Work on the building site has been held up by bad weather．
由于天气恶劣，建筑工地上的作业被延误了。
We were held up for nearly an hour on our way by the traffic accident．
我们在路上被交通事故耽搁近一个小时。
The steel strike may hold up production for several months，
钢铁工人的罢工会使生产停顿数月之久。

Take off: of an aircraft, etc. 飞机等 to leave the ground and begin to fly 起飞
The plane took off an hour late.
飞机起飞晚了一个小时。

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