on short commons
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.
youdao
食物供应不足时，售价较高。
Food commands a higher price when it is scarce.
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.
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