看不见的巨年夜的水流，由向极地的低层年夜气标的目的移动的流动的水蒸气组成。
Invisible enormous rivers of water, consisting of vapors that flow, move towards the poles in the lower atmosphere.
基因流动是相对自由的，因为个体可以移动，然后在新的地方与个体交配。
Gene flow is relatively free because individuals can move and then mate with individuals in their new location.
基因流动，即等位基因在整个物种范围内的移动，是相对自由的，因为个体可以移动，然后在新的地点与个体交配。
Gene flow, the movement of alleles across the range of the species, is relatively free because individuals can move and then mate with individuals in their new location.
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