Olefinic
烯族的
🗣️ 情景例句
I have learned to use computers and have become familiar with all clerical duties.
我学会使用电脑及熟悉所有文员的工作。
Necessity is the mother of invention.
穷则变，变则通。
I have known very few writers, but those I have known,
我所认识的作家寥寥无几，然而凡是我所认识