Now and than a magpie would call.
不时有喜鹊的叫声。
Now and than a magpie would call.
不时有喜鹊的叫声。
Herons (Ardeidae), sparrows (Passerinae) and common magpies (Corvidae) are suggested as useful bioindicators of environmental pollution.
建议选择野生鹭类、麻雀和喜鹊等类作为指示生物监测环境中的重金属污染。
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