Pentaethylated
五乙基化的
🗣️ 情景例句
I really appreciate all of your hospitality.
十分感谢您的款待。
Man has not a greater enemy than himself.
人之大敌，自己而已。
Let me see this agreement, this promise of Antonio to you.
让我看一看借约，就是安东尼奥向你许下的诺言。