Polyfluoroethylene
聚氟乙烯
🗣️ 情景例句
Don't get so excited about it.
别因为这事儿太激动。
It's been a long time.
好久不见了。
Last year we helped them with the orange-picking.We really enjoyed working on the farm.
去年我们帮他们搞苹果。我们实在太喜欢在农场干活了。