These are big animals, 大型食肉动物需要

96. are on the prowl.
    一步步靠近
97. A leopard.
    一只金钱豹
98. Every night, under the cover of darkness they come out to hunt.
    在夜色的掩护下 他们每晚都会出来猎食
99. These are big animals,
    大型食肉动物需要
100. and they're looking for large prey to satisfy their hunger.
     寻找大型猎物才能充饥
101. To catch more than a glimpse of them and reveal their hunting behaviour,
     为了多捕捉一些画面揭示他们的猎食行为
102. you need night-vision cameras.
     我们需要夜视摄像机

来自《行星地球 第二季 第六集 Planet Earth S02E06 城市》第 99 行