Finches begin to moult when they are around twelve weeks old.

燕雀在长到大约十二周大时开始换羽毛。

金山词霸

A penny soul never came to twopence.

燕雀之志,成不了大志.

《简明英汉词典》

Finches start to molt at around twelve weeks of age.

燕雀大约在12个星期大小的时候开始换羽毛。

辞典例句

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.

辞典例句

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.

辞典例句

A sparrow cannot understand the ambition of a swan.

燕雀安知鸿鹄之志. (天鹅也有“野心”啊?)

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How can a sparrow know the will of a swan?

燕雀安知鸿鹄之志哉!

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Soon, excited goldfinches, purple finches, and finches began feeding.

不久, 兴奋的金丝雀 、 紫燕雀和家燕开始过来吃食.

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Swallow and sparrow cannot understand the ambition of swan.

燕雀安知鸿鹄之志.

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A small bird wants a small nest.

小鸟求小巢.燕雀无鸿鹄之志.

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