Copolyimide
共聚多酰胺
🗣️ 情景例句
Which university do you attend?
你在哪所大学读书？
Grain by grain and hen fills her belly.
一粒一粒啄米，母鸡填饱肚皮。
Houses -- often three storeys high -- were built of stone.
房子一般有3层楼高，用石块修建。