食物链等级体系中的高等级物种平均捕获率(而捕获正在并将持续进行)处于持续上升态势之中——按照所谓食物链等级理论，这应当意味着海洋生态系统的健康平衡发生了变化。

The average trophic level of what is being caught is rising — and this in principle should indicate improving ecosystem health.

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如果将关注食物链顶端和底端的方法同时应用到全球性数据上，那么，科学家们得出的结论是，过去10年的工业捕渔更偏向捕食低食物链鱼类，而对高食物链等级的鱼类而言，它们的食物总量减少了将近一半，倘若按照食物链理论的逻辑，现存高食物链等级的鱼类总数是增加了而不是减少了，因此，不能够简单地认为，工业“捕渔”导致鱼类总体的数量减少。

Applying both methods to worldwide data, the scientists say industrial fishing over the past decades has not simply worked its way downwards from the top of the food chain -- it has gone upwards, too.

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一个身体产生“生命之热”的数量直接决定了它在“存在之链”中的位置——一个依据个体的完善程度来安排的等级序列。

The amount of "vital heat" produced by a specific body was viewed as a direct index of its place in the "great chain of being", a hierarchical order of rank according to degrees of perfection.

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