Polymethacrylonitrile
[化] 聚甲基丙烯腈
🗣️ 情景例句
We need a stable political environment in which to develop our economy.
我们需要一个稳定政治环境来发展经济。
He is most noticeable for his southern accent.
他有很浓重的南方口音。
Is anything the matter?
怎么回事呀？