Double seal
[化] 双重密封
🧩 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
seal
[sil]
n. 密封;印章;海豹;封条;
v. 密封;盖章;决定;封上（信封）;
🗣️ 情景例句
This job is hard work.
这活儿太累人了。
He always forgets to wash behind his ears.
他总是忘记洗耳朵后面。
Little by little the eleven minutes fell to zero.
慢慢地从11分钟减到了零。