Double-expansion engine
[机] 两级膨胀动力机
🧩 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
engine
['endʒin]
n. 发动机，引擎;工具;火车头;机车;
vt. 给…安装发动机;
🗣️ 情景例句
What's the lowest you're willing to go?
最低你能出什么价？
How thick is the ice here?
这儿的冰有多厚？
The hunt for the puma began in a small village where a woman picking blackberries saw 'a large cat' only five yards away from her.
搜寻美洲狮的工作是从一座小村庄开始的。那里的一位妇女在采摘黑莓时的看见“一只大猫”，离她仅5码远，