So the saguaro's success in developing a way to store water 看来弁庆柱进化出的 这种成功的储水方式
The Sonoran desert in Arizona is not quite so dry as the Atacama - 亚利桑那州的索诺兰沙漠 并不像阿塔卡马沙漠那样干旱
Further inland the air remains so warm that its moisture does not condense 在更远的内陆地区 空气一直十分灼热 水汽无法凝结
so this slender strip of desert is virtually the only part of the Atacama where life can exist. 因此这个狭长地带实际上是 阿塔卡马沙漠中唯一的生命绿洲
so it's only now that you can judge just how much life there can be in the desert. 所以只有此时你才能判断 沙漠中究竟有多少生物
so it's cool enough to allow these desert fox cubs to play. 在如此凉爽的时候 小耳廓狐也能尽情玩耍
so the kangaroos dig away the warmed topsoil 于是袋鼠刨去灼烫的表层沙土
So they lick saliva on to their forearms 所以它们将唾液抹在前臂上