Vacuum heater
[化] 真空加热器
🧩 词语组成解析
🗣️ 情景例句
She sure keeps busy.
她真的是忙个不停。
It is good to learn at another man's cost.
前车之覆，后车之鉴。
I meant to tell you yesterday, but you were not in your office.
我原想昨天告诉你的，但你没在办公室。