can often lead to intense competition. 时常激起激烈的竞争

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
81. can often lead to intense competition.
    时常激起激烈的竞争
82. But some islands are immense.
    但有些岛屿却幅员辽阔
83. More like miniature continents.
    更像是一块小型大陆
84. And these provide opportunities for life to experiment and evolve.
    这为不同生命的进化与试验 提供了机会

来自《行星地球 第二季 第一集 Planet Earth S02E01 岛屿》第 81 行