Fluoroalkylpolysiloxane
氟烷基聚硅氧烷
🗣️ 情景例句
Good night, Harry,
再见，Harry。
Please call before you come,otherwise we might not be home.
请在你来前打一下电话来,否则我们可能不在家。
It was spring,but the weather was awful.It rained all the time.
是春天，但天气太糟了。一直在下雨。