Double safety valve
[化] 双安全阀
🧩 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
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
No admittance except on business.
非公莫入。
I hope you will be able to do a good business with the Chinese as well as customers of other countries.
我希望你们能够和包括中国在内的各国客户做成交易。
Antique shops exert a peculiar fascination on a great many people.
古玩店对许多人来说有一种特殊的魅力。