He stumbled upon some guy rifling through Amanda's stuff.他撞见某人在偷阿曼达的东西

stumble upon偶尔发现

I stumble upon the rare book in a second-hand bookstore.

我在一家旧书店偶然找到这本珍贵的书。

I soon stumbled upon my first major revelation.

我很快就遇到了我上面说的第一个问题。

A set of hi8 videotapes.一盘Hi8录像带

a set of一套

She bought a set of furniture on easy terms.

她以分期付款的方式买了一套家具。

The boy itches for a set of the new stamp.

男孩渴望得到一套这种新邮票。

How much collateral damage are you willing to accept?你还想看到多少人因此而连带受伤

be willing to乐于； 愿意

I don't know whether he is willing to come.

我不知道他是否愿意来。

Successful are those who are willing to take pains.

成功的人都是那些肯努力的人。