单词	earthworm
释义	earthworm /ˈəːθwəːm / noun A burrowing annelid worm that lives in the soil, important in aerating and draining the soil and in burying organic matter. Family Lumbricidae, class Oligochaeta: Lumbricus, Allolobophora, and other genera. Centipedes are predatory, feeding on soil invertebrates such as earthworms and terrestrial insects.... Soils may harbor 50 to 500 earthworms per square meter; they keep soils aerated, and their castings fertilize the soil. The burrowing activities of earthworms increase the soil horizons most conducive to worm health and growth rate.
随便看	out-trot out-trump out-turn out-turned outvalue outvie outvoice outvote out-voter outwait outwale outwalk outwall outwander outwandering outward outward bound outward-bounder outward investment outwardly outwardness outwards outwash outwatch outwear

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