Now, scientists report that some relatives of crows called rooks used the same stone-dropping strategy to get at a floating worm.

现在，科学家报道说乌鸦亲戚白嘴鸦能用同样的扔石技巧来够到浮动的蠕虫。

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Now, scientists report that some relatives of crows called rooks used the same stone-dropping strategy to get at a floating worm.

现在，科学家报道说乌鸦亲戚白嘴鸦能用同样的扔石技巧来够到浮动的蠕虫。

youdao