Tefzel
乙烯-四氟乙烯共聚物
🗣️ 情景例句
Will it be too late if I call around 9:00 tonight?
如果我在晚上9点左右打来会不会太晚？
Please try to understand my position.
请了解我的立场。
If we could stay as vigorous as we are at twelve,
假如我们能保持12岁时的旺盛生命力，