There is nothing wrong with this implementation, though it is not very easy to change or manage.

这个实现并没有什么错误，虽然要更改或管理它不是那么容易。

youdao

This may sound contradictory to some of the advice above about starting slowly, but the key is to go very easy in the beginning -nothing that will stress your body out or make you sore the next day.

这似乎和一开始建议的，缓慢开始有些矛盾。但是对于一个刚开始跑步的人来说，重要的不是让你的身体变得更为紧张而在第二天感到酸痛；重要的是能够让你每天坚持锻炼。

youdao

The sum of work of effect and reaction has nothing to do with the choice of criterion. With this conclusion, it is very easy to work out the sum of particle and work of internal force.

利用作用力做功和反作用力做功的代数和与参照系的选择无关这样的结论，计算质点组的内力作功之和将非常简捷方便。

youdao