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。
As in the sea, it seems that on the land one key food chain collapsed: the one with leaves as its basic raw material.
然而令人震惊的是，与作为更好的健康的关键食物——更好的面包所做的斗争一直持续到了今天。
Shockingly, though, the fight for better bread as being key to better health continues to this day.
科学家们已经发现了在食物网中起作用的一些关键原理。
Scientists have found out some key principles operating in food webs.
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