Poly(vinyl fluoride)
[化] 聚氟乙烯
🗣️ 情景例句
and you've got to do one more thing.
而且你还要做一件事。
Even the walls have ears.
隔墙有耳。
Some people on the bank called out to the man in the boat, but he did not hear them.
岸上的一些人对着小船上的人高喊，但他没有听见。