例如在氢原子里面，如果你取一个结合能，它的负数就是。

So, for example, in a hydrogen atom, if you take the binding energy, the negative of that is going to be how much energy you have to put in to ionize the hydrogen atom.

youdao

练习4 - 3在有了基本框架后，对计算器程序进行扩充就比较简单了。在该程序中加入取模(%)运算符，并注意考虑负数的情况。

Exercise 4-3. Given the basic framework, it's straightforward to extend the calculator. Add the modulus (%) operator and provisions for negative Numbers.

youdao

练习4 - 3在有了基本框架后，对计算器程序进行扩充就比较简单了。在该程序中加入取模(%)运算符，并注意考虑负数的情况。

Exercise 4-3. Given the basic framework, it's straightforward to extend the calculator. Add the modulus (%) operator and provisions for negative Numbers.

youdao