Perfluorochemical
[机] 全氟化化合物
🗣️ 情景例句
He never drinks except on special occasions.
除非在特别场合，他从不喝酒。
Let not the cobbler go beyond his last.
安分守己。
Of course, I have! It's all around us!
我当然看到了，我们周围都是海！