Polyethylenamine
聚乙烯胺
🗣️ 情景例句
What a price! Lower it, please?
这么高的价格！请降点。
When the light went out, I was cleaning the yard.
当熄灯的时候，我在清理庭院。
Seeing a cake flying through the air, a lorry driver who was drawing up alongside the car, pulled up all of a sudden.
此时，一辆卡车正好从后边开到那辆汽车边上，司机看见一块蛋糕从天而降，紧急刹车。