地球是人类的摇篮，但人类不会永远呆在摇篮…
The Earth is the cradle of humanity, but mankind cannot stay in the cradle forever.
地球是人类的摇篮，但人类不会永远呆在摇篮里。
The Earth is the cradle of humanity, but mankind cannot stay in the cradle forever.
地球是人类的摇篮，但人类不会永远呆在摇篮里。