你需要移动屏幕来找到甜点之后就不要乱动了。

You have to move the screen around to find the sweet spot and then you can't move.

youdao

如果你需要移动，就在你的计划中把灵活机动性包括进去吧。

Include mobility in your plan, in case you need to move.

youdao

一经你知道你是哪里，如果你需要移动到一个不同的目录，你能知道。

Once you know where you are, you can know if you need to move to a different directory.

youdao

You need energy to move your arms around and move around mechanical systems, obviously, cars, boats, etcetera.

你需要能量,来移动胳膊和走动,机械系统，汽车，船等等。

麻省理工公开课 - 热力学与动力学课程节选