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- 母鸡用温暖的羽毛把鸡蛋覆盖起来，使小鸡孵出来。
The mother hen hatches out her young by covering the eggs with her warm feathers.
- 鸡蛋需要21天才孵化。
Hen's eggs take21 days to hatch out.
- 小鸡正从蛋壳里孵出来。
Chicks are hatching from the eggs.
- 那只母鸡已经孵出了全部小鸡。
The hen has hatched all her chickens.
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