Back-pressure valve
[化] 止回阀
🧩 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;
valve
[vælv]
n. 阀;真空管;（管乐器的）活栓;（心脏的）瓣膜;
vt. 装阀于;以活门调节;
🗣️ 情景例句
Her health is improving markedly.
她的健康正显著好转。
He was always called as genius.
他总被人们称为“天才”。
The former Prime Minister, Mr.Wentworth Lane, was defeated in the recent elections.
前首相温特沃兹。莱恩先生在最近的大选中被击败。