物理建模为模型解决“如何”之类的问题，这表示给定的计算环境中实现的真实性。

Physical modeling addresses the question of "how" for the model, which represents implementation reality in a given computing environment.

youdao

这给管理和支持部门带来很大的负担——必须在每个应用程序中为每个职员设置帐号，当用户忘记密码时还要帮助他们解决问题，等等。

This poses a huge cost for the administration and support departments — accounts must be set up in each application for each employee, users forget their passwords, and so on.

youdao

减轻的意思是指最终用户不会觉察到发生的问题，这为管理员解决问题提供了更多的时间。

Mitigation means that the end user is not aware that problems are occurring, giving the administrators more time to resolve the problems.

youdao

I just reduced it to a smaller version of the same problem.

我刚刚把它简化为一个更小的同类问题,这就是我可以写出能解决更短字符串的例子。

麻省理工公开课 - 计算机科学及编程导论课程节选