u drainu-drainu: U, u (pl. U's, u's ) 1 ...形: form; shape排水沟: drainage ditch; drain; water ...v形排水沟: v-drain拱形排水沟: arch drain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:u形排水沟，即可在微信中查询翻译
