For example, plants are key players in the global carbon cycle.

例如，植物是全球碳循环的关键参与者。

So all of a sudden humans come along, and totally alter the global nitrogen cycle.

所以突然之间， 人类出现了，彻底改变了全球氮循环。

Forests in the Global Carbon Cycle Forests play a pivotal role in the global carbon cycle.

全球碳循环中的森林 森林在全球碳循环中发挥着关键作用。

By understanding the critical role of forests in the global carbon cycle, we can appreciate the urgent need for their protection.

通过了解森林在全球碳循环中的关键作用，我们可以认识到保护森林的迫切需要。

This simple act of respiration by the world's forests plays a crucial role in the global carbon cycle and climate regulation.

世界森林的这种简单呼吸行为在全球碳循环和气候调节中发挥着至关重要的作用。

The Importance of Forest Conservation The importance of forests in the global carbon cycle highlights the need for forest conservation and sustainable management.

森林保护的重要性 森林在全球碳循环中的重要性凸显了森林保护和可持续管理的必要性。

Thinking beyond human health, bacteria are really important for global nutrient cycles – kind of like the fish pee in coral reefs, but everywhere!

超越人类健康，细菌对全球营养循环非常重要——有点像珊瑚礁中的鱼尿， 但无处不在！