He kicked so hard that his foot went straight through the door and his leg followed almost to the knee.

他踢得太用力了，以至于他的脚直接穿过了门，紧接着是他的小腿，几乎快到了膝盖。

youdao

He delivered a hard kick to her knee.

他朝她的膝盖狠狠地踢了一脚。

youdao

When we’re knee deep within a serious discussion or argument with our significant other, it’s hard to put aside our point for the moment and just listen.

我们正和另一半讨论或争论得不可开交，要我们暂时把自己的观点搁在一边而去聆听他（她）们的观点？ 难于上青天。

youdao

In one rather smart move, Mr Duncan Smith managed both to distance himself from knee-jerk europhobia and to show that he was thinking hard about public services.

ECONOMIST: Conservative Party conference: Who said we don't like Europe? | The