" To hit on" someone means to say something that would express your romantic interest.

“搭讪” 某人意味着说些表达你浪漫兴趣的话。

" To hit on" someone is to show them that you are interested in them romantically.

“搭上”某人就是向他们表明你对他们有浪漫的兴趣。

" To hit on (someone)" is a two-word phrasal verb to say something to another person that you are romantically interested in.

“To hit on (someone)”是一个双词短语动词，用来对另一个你感兴趣的人说些什么。