but just skims the horizon before rising again. 只是滑落在地平线上 再次升起
and the family will need to head out across the frozen sea before the mother's milk runs dry. 在母熊奶水干涸之前 一家人需要穿越冰封的海洋
The calves are born well before the spring melt, 牛犊出生在春天冰盖融化之前
The ducks must quickly prise the mussels free before the tide starts to turn. 绒鸭必须赶在潮流转向之前迅速采食
repeating the epic journey they made with the males only a month before. 再次踏上了1月前曾和雄企鹅共同走过的漫漫征途
they must be in position before the thaw starts. 企鹅们必须赶在解冻期结束前做好就位的准备
Before long the cacti are dripping with dew. 不久之后 雾凝结成了露水
Yet these depths were first explored only two years before man landed on the moon. 然而人类直到登月前两年 才第一次进入这个深渊
that long before the water reaches the base in the Devil's Canyon 在水还未落到恶魔谷底之前
It'll be a year before it has the strength and skill to kill for itself on these difficult slopes. 它至少需要一年时间才能有足够的技巧和力量 在这些艰险的峭壁上独自狩猎