Zedeflon
四氟乙烯均聚物
🗣️ 情景例句
I'd like to check this book out.
我想借这本书。
Are you looking for a permanent position?
你正在寻找一个固定职位吗？
As his flat is in a large town, he has no garden of his own.
他住在大城市里的一所公寓里，没有自己的花园。