认

nǐ hái rèn de chū wǒ ma

你还认得出我吗？

Do you still recognize me?

duō nián bù jiàn rèn bù chū lái le

多年不见，认不出来了。

I haven't seen you for years and I didn't recognize you.

tā biàn de shǐ wǒ jiǎn zhí rèn bù chū lái le

她变得使我简直认不出来了。

She had changed so much that I could hardly recognize her.

rèn shū

认输

admit defeat

wǒ gěi nǐ rèn gè bù shi

我给你认个不是。

I will offer an apology to you.

rèn zuì

认罪

plead guilty

rèn shī fu

认师傅

apprentice oneself to somebody

rèn lǎo shī

认老师

submit oneself to be someone's student

rèn gōng zhài

认公债

subscribe for bonds