Pentadecanone
十五烷酮
🗣️ 情景例句
Nonsense! How can you say that and keep a straight face?
胡说八道！你怎么能不动声色说那些话呢？
To know everything is to know nothing.
事事皆知，事事不懂。
Please do. We 're desperate for the material.
麻烦你了，我们非常需要这些材料。