But the mother is now driven by an urge that she cannot control.
但雌雪豹此时正被体内无法控制的欲望驱使着

Question

and any male that smells her signature will know that.
雄雪豹只需闻到她的信号便会知晓
From this moment on, her cub's life is at risk.
从此刻起雌雪豹幼崽的生命陷入了危机
Males kill cubs that are not their own.
雄雪豹会杀死非亲生的幼崽
But the mother is now driven by an urge that she cannot control.
但雌雪豹此时正被体内无法控制的欲望驱使着
She lets the males know exactly where she is.
她让雄雪豹知道了她的确切位置
From up here, she can be heard for miles around.
从这片高地她的声音可以传遍方圆数公里
A young male emerges from the wilderness,
一只年轻雄雪豹在荒野中出现

来自《行星地球第二季第二集 Planet Earth S02E02 山脉》第 299 行