Unden
n. 残杀威（一种杀虫剂）
🗣️ 情景例句
I decided to give full-time attention to raising Robbie.
我决定全力抚育他。
The student is busy studying math.
这个学生忙于研究数学。
Have you any small change, sir?
先生，您有零钱吗？