Polyflon
聚四氟乙烯树脂(商品名)
🗣️ 情景例句
Now the hard work begins.
艰苦的工作现在开始了。
What company do you work for?
你在哪家公司做事？
Computers have become smaller and smaller, more and more powerful and cheaper and cheaper.
计算机已经变得体积越来越小，功能越来越多，价格越来越低，