许多笼中鸟比野外同类鸟的寿命长。

Many caged birds live longer than their fellows in the wild.

《牛津词典》

不要使笼中鸟遭受突然的温度变化。

Caged birds should not be subjected to sudden variations of temperature.

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笼中鸟伸了一个懒腰。

The cageling extended one to stretch.

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