Double-action pump
[化] 双作用泵; 双动泵; 双动式泵
🧩 词语组成解析
double
['dʌbl]
adj. 双的;两倍的;两面派的;双人用的;
vt. 使加倍;把…对折;重复;
vi. 加倍，加倍努力;快步走;
adv. 两倍地;双重地;
n. 两倍;双精度型;
doub二，双+le反复 → 反复两倍 → 翻倍
action
['ækʃən]
n. 行动，活动;功能，作用;手段;[法]诉讼;
pump
[pʌmp]
n. 抽水机;打气筒;泵;轻软舞鞋;
v. 用泵输送 ;涌出;急速摇晃;盘问;
🗣️ 情景例句
It hurts, doesn't it?
会痛 ，是不是？
Lack of knowledge is darker than night.
没有知识比黑夜还要黑。
I'm not sure. Maybe I'll give her some flowers. What about you?
我还不太肯定。也许我送她一些花儿。你呢？