Copolyimide
共聚多酰胺
🗣️ 情景例句
Well, assume that if you care about Michelle
噢， 假如你关心 Michelle
Sincerely hope that your visit here will be worthwhile and meaningful.
衷心希望您的来访有收获且意义深远。
It took years of hard work to speak good English.
讲一口流利的英语需要多年的刻苦操练。