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In Mexico, the monarch butterflies live in a forest for the winter.
在墨西哥 黑脉金斑蝶们住在一片森林里过冬
The forest is like an umbrella.
这片森林就像一把雨伞
The butterflies don't get wet or cold.
蝴蝶们不会淋湿 也不会很冷
You can see as many as 15,000 monarch butterflies sitting on one branch!
你可以在一根树枝上看到有多达一万五千只的蝴蝶栖息着
During March, the days get longer and the air gets warmer.
三月 白天日渐变长 空气也日渐温暖
The monarch butterflies fly north.
黑脉金斑蝶们向北飞
As soon as they get to the north of the USA and Canada, they lay eggs.
它们一到美国北部和加拿大 便会产卵
Then they die.
然后它们就会死去
