Each tries to topple his opponent. 他们都想要掀翻对手

74. But if rivals are closely matched, the outcome can be uncertain.
    但如果双方体型相当 鹿死谁手就难以预料
75. Muscular tails strike with the power of sledgehammers.
    强壮的尾巴一击如同重锤
76. And their serrated teeth are as sharp as steak knives.
    锯齿形状的牙齿像牛排刀一样锋利
77. Each tries to topple his opponent.
    他们都想要掀翻对手
78. Defeated.
    胜者出现
79. Only the most powerful dragons win the right to mate.
    只有最强壮的巨蜥 才有权交配
80. The limited food and space on small islands
    岛屿上有限的食物和空间

来自《行星地球 第二季 第一集 Planet Earth S02E01 岛屿》第 77 行