Deethanization
[化] 脱乙烷; 脱乙烷作用
🗣️ 情景例句
And ...?
而且……
I'm a federal employee. I work for the Department of Labor.
我是一个联邦雇员。 我为劳动部门工作。
He had been obliged to join the army during the Second World War.
年龄比他两个弟弟大很多，第二次世界大战期间被迫参军。