Large-scale agriculture had been booming for a few hundred years, and soils were quickly getting depleted of nutrients.

大型农业开始了长达好几百年的繁荣发展，导致土壤养分迅速缺乏。

After several weeks, the mother is depleted of all nutrients and she dies.

几个星期后，母亲耗尽了所有的营养而死了。

Players are dropped into an unforgiving environment, a planet depleted of most of its population.

玩家被扔进一个无情的环境中， 一个星球上大部分人口都已耗尽。

The reflected light changes depending on whether the blood vessels at that point are oxygenated or depleted of oxygen, showing the level of brain activity.

反射光随着血管因氧合结合还是脱氧合状态改变，显示了大脑活动的水平。

In lots of places, the soil was completely depleted of nutrients, lots of the crops that did grow were destroyed by diseaseand the situation got really bad.

在许多地方， 土壤的养分完全耗尽，许多生长的农作物被疾病摧毁， 情况变得非常糟糕。

So once a stage is completely depleted of its fuel, you no longer need it, so these two particular solid rocket boosters, they're the first to fall off for the Space Launch System.

所以一旦某个级的燃料完全耗尽，你就不再需要它了，所以这两个特殊的固体火箭助推器，它们是太空发射系统中最先脱落的。