but a young male who hasn't yet developed that head crest. 而是一只还没有长出羽冠的雄鸟
the langurs have, over centuries, developed a surprising relationship. 几百年来 长尾叶猴与人类建立了一种奇妙的关系
Desert animals have developed remarkable strategies 沙漠动物进化出了非凡的策略
It has developed special techniques for hunting amongst the cacti. 它练就了在仙人掌林捕食的特殊技能
It's small tentacles carry highly developed chemical sensors which can detect traces of both predators and prey. 它的小触手有非常灵敏的化学感觉器, 可以探测到敌人和猎物的踪迹
But the blind salamander has other highly developed sensory organs. 不过这些瞎眼的蝾螈 进化出了其它发达的感觉器官