Hexynedioic acid
[化] 己炔二酸
🧩 词语组成解析
🗣️ 情景例句
What's the problem?
什么问题？
Stick to it, and you'll succeed.
只要人有恒，万事都能成。
We can't let you have any more material.
我们不能再供给你原料了。