Backknee
[医] 膝反屈
🗣️ 情景例句
I'm in the red again, would you mind lending me some money?
我又 囊中羞涩了，借点钱给我吧。
I don't believe he will get to the station on time.
我不相信他会准时到车站。
What a pity!
太遗憾了！