Copolymerisation
[建] 共聚多酯
🗣️ 情景例句
Why, I didn't know that your grandfather was born in Germany.
你看 我竟然不知道您的爷爷出生在德国。
Did you watch the new office building being built?
你看过在建设中的新的办公楼吗？
What's the matter with your foot, Jane?
珍妮，你的脚怎么了？