so it's his last chance for improvements. 所以这是雄鸟改善装潢的最后机会

65. He decorates the entrance with piles of empty snail shells and bones.
    雄鸟用成堆的蜗牛壳和骨头点缀舞台入口
66. How could any female resist?
    没有雌性能拒绝这一切
67. The rains are due any day,
    随时都有可能下雨
68. so it's his last chance for improvements.
    所以这是雄鸟改善装潢的最后机会
69. You can never have too many shells.
    蜗牛壳永远都不嫌多
70. But in his absence...
    但当它离开的时候
71. ..a rival male drops by, to size up the competition...
    一只竞争对手来到此处 评估一下彼此的优劣

来自《行星地球 第三季 第三集 Planet Earth S03E03 沙漠与草原》第 68 行