Humanity's ancestors may have departed Africa — the cradle of mankind — eons earlier than scientists have assumed.
人类的祖先离开非洲——人类的摇篮——的时间可能比科学家原先推测的要早上亿万年。
Forest is the cradle of mankind. The growth and development of human beings are inseparable with the utilization of forests.
森林是人类的摇篮，人类的成长繁衍与对森林的利用密不可分。
Mankind dwells and breeds by rivers. So, rivers become the cradle of human civilization, from which the valley culture is derived.
人类诞生，依傍着江河成长，江河便成了人类文明的摇篮，江河便衍生了流域文化。
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