Terminal double bond
[化] 末端双键
🧩 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
who spent the last five years
用过去五年的时间
It's half past nine.
现在是九点半。
Some of them were as big as marbles.
有的钻石像玻璃球那么大。