当旅鼠的食物供应不足以维持种群时，一次特别的迁徙就开始了。
When the lemmings' food supply becomes too low to support the population, a singular migration commences.
食物供应不足时，售价较高。
食物供应不足，无法满足需要而出现的状况。
A condition in which there is insufficient food to meet the demands.
食物供应不足，兵蚁便会组成一个由多达五千万个体组成的流动群体。
When food supplies are low, these ants will swarm in sizes of up to 50 million single ants.
这却带来了一个始料不及的结果：在世界人口众多的地区食物供应不足，生活水准下降。
This has the entirely unintended result of making the food supply inadequate and lowering the standard of life in the parts of the world that have the greatest populations.
食物供应已严重不足。
食物供应还不足以应付饿民的需求。
The food supplies are inadequate to meet the needs of the hungry.
小岛上自产自销的食物显然并不足以供应这些人群。
Obviously there is not enough food produced on the island itself, to feed these hordes.
如果是过去那个贫穷的印度，食物供应短缺也就不足为奇。
When India was poor, its failure to feed itself properly did not seem odd.
因此，当只有供应不足的质量低劣的食物时，角马，转角牛羚和小羚羊享有了优势。
Thus, when there is only a short supply of poor-quality food, the wildebeest, topi, and gazelle enjoy an advantage.
这项研究发现，猫科动物在40个犬科物种的灭绝过程中发挥了重要作用。由于猫科动物通常是更有效率的捕猎者，在夺取供应不足的食物的竞争中猫科动物胜过了犬科动物。
The research finds that cats have played a significant role in making 40 dog species extinct, outcompeting them for scarce food supplies because they are generally more effective hunters.
这项研究发现，猫科动物在40个犬科物种的灭绝过程中发挥了重要作用。由于猫科动物通常是更有效率的捕猎者，在夺取供应不足的食物的竞争中猫科动物胜过了犬科动物。
The research finds that cats have played a significant role in making 40 dog species extinct, outcompeting them for scarce food supplies because they are generally more effective hunters.
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