Polybenzimidazole
聚苯并咪唑
🗣️ 情景例句
She has now held the post of Prime Minister longer than anyone else this century.
她现在担任首相任期之长在本世纪是前所未有的。
And trade terminology in English is helpful in actual business negotiations.
对于实际的商务谈判是非常有用的。
No, thanks. I can manage it myself.
不，谢谢。我可以自己提。