当毛毛虫变成蝴蝶的时候，茧里发生了什么仍然是自然界最大的秘密之一。
What goes on in a cocoon as a caterpillar changes into a butterfly remains one of nature's best kept secrets.
但是动物王国的不同动物-从五色斑谰的鸟类和热带鱼，到蝴蝶与蛇-如何确定和分布其巧妙的颜色设计是大自然最深的秘密之一。
But how different creatures in the animal kingdom — from colorful birds and reef fish to butterflies and snakes — make and deploy their artful designs is one of nature's deepest secrets.
心有栅栏，然后青藤爬过，那些小秘密点缀其中，像叶片下小憩的蝴蝶，做梦一般，只能用花粉形容。
The fence in your heart, and then climb, those little ivy leaves adorned among them, like a blade secret under the butterfly rests, dream, can use to describe general pollen.
心有栅栏，然后有青藤爬过，那些小秘密点缀其中，像叶片下小憩的蝴蝶，做梦一般，只能用花粉形容。
The heart has the fence, and ivy climbed, those little secrets which adorn, like leaves the rest of the butterfly, dream, can only use the pollen to describe.
肥胖的毛毛虫钻进茧中，如何就变成了美丽的蝴蝶，这一直都是自然界的一个秘密。
It takes drastic chemical changes to morph a squirmy caterpillar into a beautiful butterfly, and scientists have estimated that this process requires loads of energy to go forward.
肥胖的毛毛虫钻进茧中，如何就变成了美丽的蝴蝶，这一直都是自然界的一个秘密。
What goes on in a cocoon as a caterpillar changes into a butterfly remains one of nature "s best kept secrets."
肥胖的毛毛虫钻进茧中，如何就变成了美丽的蝴蝶，这一直都是自然界的一个秘密。
What goes on in a cocoon as a caterpillar changes into a butterfly remains one of nature "s best kept secrets."
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