参加,参与;
例句:
Kenworthy had run him in on a petty charge.
肯沃西以一项微不足道的指控为由将他拘捕了。
He has not yet been let in on the bad news.
他还不知道这个不幸的消息。
A bank of telephoto lenses homed in on him.
一整排的远摄镜头都对准了他。