Poisson equation
[计] 泊松方程
🧩 词语组成解析
[计] 泊松
🗣️ 情景例句
If you drive carefully.
只要你小心驾驶。
We know not what is good until we have lost it.
有的时候不爱惜，失了以后空叹息。
and so the tools of long ago have remained when even the bones of the men who made them have disappeared without trace.
因此，尽管制造这些工具的人的骨头早已荡然无存，但远古时代的石头工具却保存了下来。