Ethylating
乙基化(的)
🗣️ 情景例句
He's been here for years, he should know the ins and outs of the job by now.
他在这里已经好多年，现在理应熟悉各方面的工作了。
Go to hell!
去死啦！
Then he showed me the contents of the parcel.
接着他给我看了包里的东西。