Zedeflon
四氟乙烯均聚物
🗣️ 情景例句
There are, Ellen.
一定有， Ellen。
If you want a towel,look in the linen closet.
如果你想要一条毛巾，请在亚麻织品衣橱里找。
These lights flickered continuously like traffic lights which have gone mad.
灯泡一刻不停地闪烁着，就像失去了控制的红绿灯。