Polymethacrylate
聚甲基丙烯酸酯
🗣️ 情景例句
and making it a new community center.
使它成为一个新的社区中心。
Wonders are many, and nothing is more wonderful than man.
奇迹很多，但没有一件东西比人更为奇妙。
3 What have you been interested in for as long as you can remember?
3。你所能想起来的自己感兴趣的事是什么？