used before an adjective to indicate that one provokes the specified feeling in others (e.g. 讨人厌 tǎo​rén​yàn 'annoying', 讨人喜欢 tǎo​rén​xǐ​huan 'likable')

(old) a young girl bought or trafficked into a brothel to be trained for work as a prostitute.

To reclaim or retrieve a person.