半开玩笑，他说：我不知道为什么你们这些人想利用蛋白质的补充。

Half jokingly, he said, I don't know why you people like to take protein supplement.

youdao

骗你们的，不知道我为什么那么说。

That's not true. I don't know why I said that.

youdao

收到你们的邮件，说我违反了提名程序规则，感到十分意外，不知道你们有什么证据说我违反了规则。

I am so sorry to receive your email which informed me that I had not obey the rules of referral program.

youdao

up here if you want beer flavor this might be Guinness, which I can't even spell, but you know what I mean.

在这边的啤酒口味是,吉尼斯,我甚至不知道怎么拼,但你们知道我说的是什么

耶鲁公开课 - 博弈论课程节选