Oleum spirit
[化] 沸程范围在300-400度F之间的石油馏分
🧩 词语组成解析
n. 发烟硫酸\\n[化] 发烟硫酸
🗣️ 情景例句
It's time we hired a secretary to answer the phones.
我们早就该请一个秘书接听电话了。
I ran all the way to school, otherwise I'd have been late.
我一路跑到学校，不然就迟到了。
I'm supposed to go on a diet.
我应该节食。