Diffusivity
n. 扩散性, 扩散能力, 扩散系数, 扩散率\\n[化] 扩散系数
🗣️ 情景例句
Hello, ... speaking. Who do you wish to speak to?
喂， 我是……你想找谁？
I enjoyed the movie very much. I wish I had read the book from which it was made.
电影不错，我希望我读过原著。[wish + 主语 = 过去完成时 = 愿望之事在wish以前发生。]
Don't worry.
别担心。