She has just one brief summer in which to teach them their mountain survival techniques. 母狮只能利用这个短暂的夏天 教会小狮在山区生存的技能

82. Pumas are usually solitary and secretive.
    美洲狮通常独来独往 隐秘莫测
83. To see a group walking boldly in the open is extremely rare.
    这么一大家子在光天化日之下 外出实属罕见
84. It's a family - a mother with four cubs.
    这个家庭由一只母狮和4只小狮组成
85. She has just one brief summer in which to teach them their mountain survival techniques.
    母狮只能利用这个短暂的夏天 教会小狮在山区生存的技能
86. Rearing four cubs to this age is an exceptional feat,
    把4只小狮养到这么大 是很了不起的业绩
87. but she does have an excellent territory,
    那是因为它有一片富饶的领地
88. rich in food and water.
    食物和水都很充足

来自《行星地球 第一季 第二集 Planet Earth S01E02 山地》第 85 行