In all its simplicity, the jellyfish has existed for more than 600 million years with little change.
In all its simplicity, the jellyfish has existed for more than 600 million years with little change.
虽然水母的结构很简单，它已经在地球上存在超过六亿年了，而且没有什么改变。
In all its simplicity, the jellyfish has existed for more than 600 million years with little change.
虽然水母的结构很简单，它已经在地球上存在超过六亿年了，而且没有什么改变。