Perfluorochemical
[机] 全氟化化合物
🗣️ 情景例句
Who am I, you old rascal?
我是谁 ？你这个老玩童。
There is safety in numbers.
人多势众。
The speedboat had struck a buoy, but it continued to move very quickly across the water.
快艇撞上了一个浮标，但它仍在水面上快速行驶着。