come bysth
—phrasal verbwithcomeverbuk/kʌm/us/kʌm/came|come
C2
to get something, usingeffort, bychanceor in a way that has not beenexplained
得到；弄到；获得
Cheaporganicfoodis stilldifficultto come by.便宜的有机食品仍然很难买到。
I'd like toknowhow she came by thatblackeye.我想知道她眼眶又青又肿是怎么弄的。