Back flow
[化] 回流; 倒流; 开模缩裂
🧩 词语组成解析
back
[bæk]
n. 背，背部;背面，反面;后面，后部;（椅子等的）靠背;
vt. 使后退;支持;加背书于;下赌注于;
vi. 后退;倒退;
adj. 背部的;后面的;以前的;拖欠的;
adv. 以前;向后地;
flow
[fləu]
vi. 流;垂;流出;（谈话、文体等）流畅;
n. 流动;滔滔不绝;涨潮;连贯;
vt. 使泛滥;淹没;排出;
🗣️ 情景例句
It was my please.
荣幸之至。
The German quotation is lower than yours.
德国报价比你们的低。
She makes it clear that she doesn't like swimming.
她明确地表示她不喜欢游泳。