There are little ones on top of bigger ones, all adding to give the appearance of random patchiness.
小声波在大一些的声波上面，所有这些都显示随机补缀的样子。
This spatial variation in population structure may be the result of variation in the patchiness of resources exploited by gallwasps, particularly host oak plants.
这种种群结构在空间上的变异可能是被栎瘿蜂开发的资源尤其是栎树寄主在斑块上出现变异的反映。
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