Now and than a magpie would call.

不时有喜鹊叫声。

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属污染。

Now and than a magpie would call.

不时有叫声。

Herons (Ardeidae), sparrows (Passerinae) and common magpies (Corvidae) are suggested as useful bioindicators of environmental pollution.

建议选择野生鹭类、麻雀和等类作为指示生物监测环境中重金属污染。

Now and than a magpie would call.

不时有喜叫声。

Herons (Ardeidae), sparrows (Passerinae) and common magpies (Corvidae) are suggested as useful bioindicators of environmental pollution.

建议选择野生鹭、麻雀和喜等指示生物监测环境中重金属污染。

Now and than a magpie would call.

不时有鹊叫声。

Herons (Ardeidae), sparrows (Passerinae) and common magpies (Corvidae) are suggested as useful bioindicators of environmental pollution.

建议选择野生鹭类、麻鹊等类作为指示生物监测环境中重金属污染。

Now and than a magpie would call.

不时有喜叫声。

Herons (Ardeidae), sparrows (Passerinae) and common magpies (Corvidae) are suggested as useful bioindicators of environmental pollution.

建议选择野生鹭类、麻雀和喜等类示生物监测环境中重金属污染。

Now and than a magpie would call.

不时有叫声。

Herons (Ardeidae), sparrows (Passerinae) and common magpies (Corvidae) are suggested as useful bioindicators of environmental pollution.

建议选择野生鹭类、麻雀等类作为指示生物监测环境中重金属污染。

Now and than a magpie would call.

不时有的叫。

Herons (Ardeidae), sparrows (Passerinae) and common magpies (Corvidae) are suggested as useful bioindicators of environmental pollution.

建议选择野生鹭类、麻雀和等类作为指示生物监测环境中的重金属。

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环境中的重金属污染。

Now and than a magpie would call.

不时有喜鹊叫声。

Herons (Ardeidae), sparrows (Passerinae) and common magpies (Corvidae) are suggested as useful bioindicators of environmental pollution.

建议选择野生鹭、麻雀和喜鹊作为指示生物监测环境中重金属污染。