Diffusion donstant
[化] 扩散常数
🧩 词语组成解析
🗣️ 情景例句
I am exhausted. My new exercise class is so hard.
我太累了。我那新的健身班太难了。
It is a matter of life and death to me.
那对我是生死交关的问题。
We'll get used to that, Bill,' said the vicar.
“大家慢慢就习惯了，比尔，”牧师说。