Vinylene monomer
[化] 1,2-亚乙烯基单体; 1,2-二取代乙烯单体
🗣️ 情景例句
I've been wanting to meet you for some time.
很久以来我一直想见你。
Just a minute and I'll see if there are any flights.
等一下,我来看看有没有班机。
Now the manager has found that things are missing.
现在,经理已发现有东西丢失。
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