Now and than a magpie would call.

不时有鹊的叫声。

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

建议选择野生鹭类、麻雀和鹊等鸟类作为指示生物监环境中的重金属污染。

Now and than a magpie would call.

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、麻雀和喜鹊等鸟类作为指示生物监环境中的重金属污染。

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、麻雀和喜鹊等鸟类作为指示生物监环境中的重金属污染。

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、麻雀和喜鹊等鸟类作为指示生物监环境中的重金属污染。

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、喜鹊等鸟类作为指示生物监环境中的重金属污染。

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、麻雀和喜鹊等鸟类作为指示生物监环境中的重金属污染。

Now and than a magpie would call.

不时有喜鹊。

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

建议选择野生鹭类、麻雀和喜鹊等鸟类作为指示生物监环境中重金属污染。

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.

建议选择野鹭类、麻雀和喜鹊等鸟类作为物监环境金属污染。

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、雀和喜鹊等鸟作为指示生物监环境中的重金属污染。