Polymethylmethacrylate
聚甲基丙烯酸甲酯, 有机玻璃
🗣️ 情景例句
And remember,
记住，
Did you go to the zoo this morning?
你今早去动物园了吗？
Half an hour later ,she woke up and began to cry.
半小时后她醒了，哭了起来。