Diethylidene
[化] 二亚乙基; 2-丁烯
🗣️ 情景例句
I hope you're enjoying your stay here.
我希望你在这里过得愉快。
So much is mine as I enjoy.
我所有的就如我享有的这么多。
OK. Let me help you. There!
好，让我来帮你。