哥斯达黎加蝴蝶农场：人与昆虫的共同成长
In Costa Rica, there are special places called butterfly farms. At a butterfly farm, people take care of butterflies. They help them grow from tiny eggs to beautiful adults.
A butterfly starts as a small egg. Then it becomes a caterpillar. The caterpillar eats leaves and grows big. After that, it makes a hard shell called a cocoon. Inside the cocoon, it changes into a butterfly.
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