Unden
n. 残杀威（一种杀虫剂）
🗣️ 情景例句
That's for sure.
那是当然。
If I want to be healthy,I have to stop smoking cigarettes.
如果我想要健康,我必须停止吸烟。
I like gardens too, but I do not like hard work.
我也喜欢花园，但我却不愿意辛勤劳动。