Vinylene
1,2-亚乙烯基, 乙烯撑, 次亚乙烯基
🗣️ 情景例句
The title ...
名字……
You can stay as long as you pay the rent on time.
只要你按时交房租，你就能住这儿。
The ice is hard enough to skate on.
冰已经厚得可以划冰了。