Polyacrylics
聚丙烯酸化物; 聚丙烯酸化物
🗣️ 情景例句
I was expecting him here at five forty-five.
我们约好了五点四十五在这里会面的。
After eating breakfast,I go back upstairs again.
在吃早餐以后，我再回楼上。
This box is big.
这是个大盒子。