u tream ve elupstream vessel逆流: anarrhea; backset; backwash; ...船: boat; ship; vessels漂流船: derelict; drifting ship顺流船: downstream vessel验流船: drifting logship下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:逆流船，即可在微信中查询翻译
