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hump n. /hʌmp/ a large, round raised area or part 隆起,凸起
The car hit a hump in the road and swerved.
汽车撞上了路上的一个隆起而突然变向。

to be past the most difficult or dangerous part of an activity or period of time
完成了最困难的部分,渡过难关
It's been hard work but I think we're over the hump now.
这是一项很艰苦的工作,但我想我们已经完成最困难的部分了。