英语翻译高手进，复制的勿进Exercised animals ended up with nealy twice as

英语翻译高手进，复制的勿进
Exercised animals ended up with nealy twice as many photoreceptors as mice which spent the same amount of time on a stationary treadmill.

One point to emphasise is that the exercise the animaals engaged in is really comparable to a brisk walk