Polyfluoroprene
聚氟丁二烯
🗣️ 情景例句
Where was the house?
房子在什么地方？
The darkest hour is that before the dawn.
黎明前是最黑暗的时刻。
You are just putting on a little weight. I believe you'll get that off easily.
你只是稍微胖了些，很快就会恢复的。