As in the sea, it seems that on the land one key food chain collapsed: the one with leaves as its basic raw material.

和在海洋中一样，陆地上一个关键食物链，一个以树叶为基本原料的食物链似乎也崩坏了。

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A key to gaining value from a collection of raw event data is the process by which business-actionable intelligence is derived from that data.

从原事件数据集中获取值的关键就是一个流程，通过这个流程可以从这些数据中派生出实时业务智能。

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Raw milk advocates also claim that pasteurization destroys key nutrients.

鲜奶拥护者同时也宣称灭菌过程破坏了重要的营养素。

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We attribute this to rising paper prices, a key raw material.

FORBES: Higher Prices Still In The Cards For American Greetings

Apatite, a phosphate, is a key raw material of some fertilisers.

BBC: NEWS | Business | Metals boom sparks Kola nature fears

But unlike other alternative energy sources, such as sun or wind power, there's nothing fickle about the availability of the key raw ingredients--fresh water and sea water.

FORBES: Getting Power From Salty Water