Cyclobutadiene
[机] 环丁二烯
🗣️ 情景例句
What is your responsibility there?
你在那主管什么？
You have to study English, don't you?
你必须学英语，不是吗？
Sure. Don't be late -oh, and put on your old clothes.
当然。不要迟到--噢，还有，穿上你的旧衣服。