Polystream
多氯苯
🗣️ 情景例句
I recommend rose-petal salad.
我向你们推荐玫瑰花瓣沙拉。
Humility is the foundation of all virtue.
谦逊是一切美德的基础。
We're going to help some farmers with their work.
我们打算去帮助一些农民干活。