研究人员对美国布鲁克菲尔德动物园圈养的汉波德企鹅进行试验，首次发现企鹅可以嗅出陌生者与亲戚。
Experiments with captive Humboldt Penguins at Brookfield Zoo proved, for the first time, that the birds use scent to discriminate between close relatives and strangers.
研究人员对美国布鲁克菲尔德动物园圈养的汉波德企鹅进行试验，首次发现企鹅可以嗅出陌生者与亲戚。
Experiments with captive Humboldt Penguins at Brookfield Zoo proved, for the first time, that the birds use scent to discriminate between close relatives and strangers.
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