plant and animal residues
... parent plant or animal 动植物的亲代 plant and animal residues 动植物残体 plant animal formation 动植物群系 ...
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植物获得的大部分磷是来自动植物残体的分解，换句话说是来自有机化合物。
Plants get most of their phosphorus from the decomposing remains of dead plants and animals — in other words, from organic compounds.
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