Vinylene
1,2-亚乙烯基, 乙烯撑, 次亚乙烯基
🗣️ 情景例句
We have around 3,000 workers.
大约有3000名职工。
Any personal hobbies such as sports, music and collecting stamps never had a place in his life.
任何一种个人的业余爱好，如体育活动，音乐，集邮等等在他的生活中从未有过地位。
She's very well, too, Helen.
她也很好，海伦。