Polymethylmethacrylate
聚甲基丙烯酸甲酯, 有机玻璃
🗣️ 情景例句
and come back Sunday.
然后在星期天回来。
The sanitary engineer collects garbage.
卫生队员收集垃圾。
He is very happy to see his wife.
丈夫见到他妻子，很高兴。