These great scars on the face of the Earth appear to be lifeless, 这些地球脸上的大伤疤看似毫无生机
these glow worms have solved the biggest challenge that permanent cave dwellers face - 这些萤火虫成功地解决了 终生穴居动物面临的最大难题
or face months of near starvation. 或者忍受几个月的饥荒