如果一个以上的物种竞争稀缺的资源，竞争的物种通常会转向不同的替代资源。
If more than one species is competing for a scarce resource, the competing species usually switch to different alternative resources.
此外，大多数物种并不完全依赖单一的资源，如果一个物种的主要资源变得稀缺，该物种通常可以转向替代资源。
Furthermore, most species do not depend entirely on a single resource, if the major resource for a species becomes scarce, the species can usually shift to alternative resources.
生物学家正在想方设法，通过捕食关系的多寡来确定哪些物种更加稀缺，方法之一就是Google的搜索算法。
Biologists have been looking for ways to determine the most important species based on the number of feeding-related interactions, and surprisingly the Google search algorithm is playing a part.
稀缺性不仅仅由某个物种所包含的个体数量决定，还和物种的数量有关。
Rarity is not merely determined by the number of individuals in a species, it is also about how unusual that species is.
稀缺性不仅仅由某个物种所包含的个体数量决定，还和物种的数量有关。
Rarity is not merely determined by the number of individuals in a species, it is also about how unusual that species is.
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