Double bond
高中 Senior High[化] 双键
🧩 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
🗣️ 情景例句
Please look us up.
请和我们联络。
He who has health has hope, and he who has hope has everything.
身体健壮就有希望，有了希望就有了一切。
This wonderful plane can carry seven passengers.
这架奇妙的飞机可以载7名乘客。