毛虫能变成蝴蝶或蛾子。
毛虫能变成蝴蝶。
妈妈：因为毛虫姊姊能变成蝴蝶，天空会保护她啊。
Mother: Since his sister to become a butterfly caterpillars the sky will protect her ah.
毛毛虫必须经过茧的阶段才能变成蝴蝶。
A caterpillar must pass through the cocoon stage to become a butterfly.
毛毛虫必须经过茧的阶段才能变成蝴蝶。
A caterpillar must pass through the cocoon stage to become a butterfly.
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