你不剔趾甲，我就不咬手指甲。

I won't bite my nails if you don't pick your toes.

youdao

如果你不咬你的指甲，我可以向你保证知道某人谁做它。

If you don't bite your nails, I can assure you know someone who does it.

youdao

真希望她要是不咬手指甲就好了。

'If only she didn't bite her fingernails.

youdao

It's unbearable. It's really uncomfortable, it makes you want to bite your nails or just run out of the room.

这真让人难以忍受。你感觉很不自在，这让你想咬指甲或者干脆夺门而出。

Is there any 课堂 - SpeakingMax英语口语达人