prey onsb
—phrasal verbwithpreyverbuk/preɪ/us/preɪ/
tohurtordeceiveagroupofpeople,especiallypeoplewho areweakor caneasilybehurtordeceived
伤害，欺骗，坑害（尤指弱势人群）
He wouldattackatnight, preying onlonewomen intheirtwentiesorthirties.他总在夜间出没，袭击二三十岁的单身女子。
It'sparticularlycontemptiblethat thesesortofpeoplepreyon theelderly.这种人坑害老年人真是太卑鄙了。