chaffinch例句

Thorpe next set out to determine exactly when the chaffinch learns to sing.
接着,索普就开始研究苍头燕雀是在什么时候学唱歌的.

The chaffinch has three or four songs and produces them in a specific order.
苍头燕雀合唱三、四种歌,唱的时候按着一定的先后次序.

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