and only venturing out in the cool of the night. 只在凉爽的夜晚外出活动
Dune grass, the only vegetation here, provides virtually none, 沙丘草是这里唯一的植物 近乎无荫可寻
Desert life is not only shaped by the scarcity of water, 沙漠中不仅水源稀缺
Now, water not only offers them the chance to drink, 水不仅能用来喝
With only their mother to shield them from the sun, 只有母亲在帮他们遮挡太阳
For many animals, the only way to survive the most hostile times 动物们想要在最严苛的环境里活下来
A super swarm of this scale may only appear once in a decade. 如此大规模的超级蝗群也许十年才出现一次
These are the only birds of prey that hunt in packs. 栗翅鹰是唯一成群捕食的猛禽