Double-extension method
[经] 双重扩展法
🧩 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
having to take care of the baby all weekend.
整个周末照顾孩子。
I'm glad to meet you.
幸会。高兴见到你。
He had hardly had time to settle down when he sold the house and left the country.
还没等安顿下来就卖掉了房子，离开了这个国家。