PHRASAL VERB 与…搭讪;与…调情 If you chat someone up, usually someone you do not know very well, you talk to them in a friendly way because you are sexually attracted to them. 与…搭讪;与…调情 [British, informal]
He'd spent most of that evening chatting up one of my friends. [VERBPREP. noun]
他大半个晚上都在和我的一个朋友搭讪。
She was chatting one of the guys up. [VERB noun PREP.]