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

71. Space being limited on islands, dragon territories overlap,
    岛屿上空间有限 巨蜥的地盘时常重叠
72. and that creates continual conflict.
    导致冲突不断
73. In dragon society, size is everything.
    在巨蜥族群里 体型决定一切
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

来自《行星地球 第二季 第一集 Planet Earth S02E01 岛屿》第 74 行