that there is uncertainty and tension. 以致整个场面充斥着不确定和紧张的气氛
But there are times when snow leopards must come together, 有些时候雪豹们必须聚到一起
There is simply not enough prey to sustain more. 只是因为猎物数量不足以维系更多的生命
there is less and less space for wildlife, 野生动植物的生存空间日益减少
Up here, there are few other creatures to bother the flamingos, 高山之上 很少有其他动物来打扰火烈鸟
Out on the lake, there is nowhere to hide. 而湖面上则无处可藏
there is very little protection from ultraviolet radiation. 无法阻挡紫外线的辐射
so up in the branches, there could be prey. 所以林子里可能有猎物
There are now around 30 bears in this one valley. 这个山谷中大约有三十只熊