may live and die without ever having contact with humanity. 可以不受人类干扰地生存和死亡
Two out of three penguins survive the seal attacks and succeed in reaching their ever hungry chicks. 有三分之二的企鹅能在海狗的攻击下逃生 顺利到达永远吃不饱的小企鹅身边
these dolphins have taken on an ever tougher challenge. 这些海豚面临着一个巨大挑战
yet few will ever reach the finishing line, 众多的运动员中只有少数可以冲过终点
This rich pasture once supported the greatest herds ever seen on our planet. 这里的大草原肥沃甘美 曾经养育着地球上最大的动物群落
Biting flies and the quest for new pasture drives the migration ever onwards. 会叮咬它们的苍蝇以及为了寻找新草场, 驱使它们不停的向前迁徙
Few people ever see this extraordinary annual event. 这一蔚为壮观的场面一年一次 但却很少有人亲眼目睹
Losing one might mean never getting the chance to breed ever. 失败一次或许意味着将永远失去生育权
They were about to discover some of the most exquisite formations ever seen underground. 因为他们发现了一些 地底世界中最精美的构造
an animal few humans have ever glimpsed 这种动物只有很少一部分人亲眼见过