Polyfluoroethylene
聚氟乙烯
🗣️ 情景例句
Sure. It's up ahead to your left.
好的。往前走，在你的左边。
My sweater is blue.
我的毛衣是蓝色的。
It is not only of immense size, but is extremely accurate as well.
此钟不仅外型巨大，而且走时也非常准确。