Hexene diacid
[化] 己烯二酸
🧩 词语组成解析
[化]己烯
n. [化]二酸\\na. [化]二价酸的, 二酸的
🗣️ 情景例句
Who is it?
是谁?
When do you leave?
你何时起程？
I've been working so hard recently that I haven't had any time for collecting new stamps.
最近我的学习一直很紧张，没有时间收集新邮票。