there rose from the ashes a life-form that had previously only survived 一种此前只在边缘地带幸存的生物
became the dominant life-form on Earth. 成为了地球的主宰
For there is one particular life-form that thrives on dead organic matter. 因为有一种生物 依靠死亡的有机物兴旺发展
one curious life-form was among the first to rise to the challenge. 有一种好奇的生物率先发出挑战
The crucial alliance shared by every life-form on our planet. 是所有地球生命的关键组成部分