knee

膝蓋、膝、膝關節

She hurt her left knee while playing basketball yesterday.

她昨天打籃球時弄傷了左膝。

膝部、褲膝

There was a hole in the knee of his jeans.

他牛仔褲的膝部破了一個洞。

膝上、大腿上

The little boy fell asleep on his father's knee.

小男孩在爸爸的膝上睡著了。

用膝撞、膝擊

He kneed his attacker in the stomach and ran away.

他用膝蓋頂了攻擊者的肚子，然後逃走。