Polymethacrylonitrile
[化] 聚甲基丙烯腈
??? 情景例句
They are in Thessaloniki.
他們住在Thessaloniki
I took charge of the group.
我管理過那批人。
Many strange new means of transport have been developed in our century,
本世紀已研制出許多新奇的交通工具，