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。

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He delivered a hard kick to her knee.

他朝她的膝盖狠狠地踢了一脚。

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A wintry measure of hard times can be found this holiday season on the knee of white-bearded, red-suited men around the country.

今年的圣诞季，从美国各地白胡子、红衣服的圣诞老人收到的圣诞心愿中，反映出经济困难时期的萧瑟之象。

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Margarito finally forced Cotto to his knee after a hard combination and then continued to unload as his opponent staggered around the ring, finally going down a second time as the towel flew in.

BBC: Margarito ends Cotto unbeaten run

We'll see how the knee responds on hard.

CNN: Federer: Good to have Rafa back as Indian Wells clash looms

"I'll be working as hard as possible, as soon as my knee allows, to be back in time, " he told the Glasgow website.

BBC: Chris Cusiter & Al Kellock injury worries for Scots