Back pressure
[医] 反压, 回压
🧩 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;
🗣️ 情景例句
How many do you want? I can probably get the owner to bring down the price.
你要几只？我大概可以找店主杀价！
I wasn't born yesterday.
我又不是三岁小孩。
Have you received a letter from Jim yet?
你收到了吉姆的来信没有？