Polyflon
聚四氟乙烯树脂(商品名)
🗣️ 情景例句
You came very close, Ellen.
差了一点点， Ellen。
I am very happy that you have come all the way from the United States to visit our company.
您不远千里从美国来我公司访问，我们感到非常高兴。
Gradually the river grows wider, the banks recede,
然后河面渐渐地变宽，两岸后撤，