Move fast, but not too fast.

迅速行动，但不能太快。

youdao

You could simply guess, but you risk running the intervals too fast--or too slow--and not reaping the appropriate training benefits.

当然你可以简单地去猜测，但是这样你会冒跑得过快或过慢的风险，这样就无法得到最好的训练效果，或者你可以用Eyestone预测配速的方法，需要你绷紧比赛的神经，尽力跑个1英里——这是获得你能力的最准确的方式，但需要花很多工夫。

youdao

This improved program performance, not because the computers were too slow but rather they were too fast.

这种方式提高了程序性能，不是因为计算机太慢了，而是因为它们太快了。

youdao

Its sales growth is slowing, too, but not as fast as the retail group's, and the business provides welcome ballast.

FORBES: Magazine Article

"They may be prepared to act reasonably fast but not to cause too much pain, " says Collins.

CNN: Getting Down to Work

China may or may not be growing too fast, but it is certainly investing too much.

ECONOMIST: A reheated economy