You can ask for help whenever you need it.

你如果需要帮助随时可以提出来。

《牛津词典》

Repeat them to yourself whenever you need a lift.

当你需要勇气时，就自己重复一遍。

youdao

You can switch perspectives whenever you need to.

在需要时，您可以切换透视图。

youdao

So the moral here, again, is whenever you're doing an implementation of a simulation, you do need to have some underlying theory about the model.

所以这里的寓意还是,不管你在做什么东西的仿真程序，你需要有一个,模型的底层程序。

麻省理工公开课 - 计算机科学及编程导论课程节选

Take care of your soul so that you can connect to empathy, patience and kindness whenever you need them.

FORBES: Who Comes First In A Partnership?

Most of the big banks offer these, and they allow you to access your money wherever and whenever you need it.

BBC: How to budget for living abroad

Bringing many of the popular emWave features to iOS devices, Inner Balance is the only app and sensor available that offers both real-time monitoring and training to manage stress and rebalance the mind and emotions whenever you need it.

ENGADGET: HeartMath unveils Inner Balance iOS app and sensor for managing stress, clearing the mind