One explanation is that Scott had a healthy regimen on the ISS replete with exercise and nutritious astronaut food.

有一个解释是，斯科特在国际空间站有着健康的作息、充分的运动和富有营养的宇航员食物。

I know it's " iss" , it looks like this, " his" , but this makes this sound, the " iz" sound.

我知道它是“iss” ，它看起来像这样， “他的”，但这发出了这个声音， “iz” 的声音。