由于养分的重要性和贫乏性，营养循环是我们在这门课中会讲到的最重要的生态系统过程之一。

Because of the importance of nutrients and their scarcity, nutrient recycling is one of the most significant eco-system processes that we'll cover in this course.

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而尽管在加勒比海、北太平洋或阿拉斯加沿岸，相关海洋生态系统的重要性已经显现出来，但是还没有任何相关的保护措施。

None has been designated in the Caribbean or the northern Pacific or off Alaska, despite the presence of important Marine ecosystems in these About sponsorship areas.

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戈尔回答道，他觉得地球的重要性独一无二，而保护地球的生态环境是最重要的。

Al responded that he felt that the earth was the ultimate importance and that protecting the earth's ecological system was most important.

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