And, among them, inevitably, 而这之中 必然存在

245. staying hidden all day,
     白天隐匿在各处
246. and only venturing out in the cool of the night.
     只在凉爽的夜晚外出活动
247. As darkness falls, animals appear from seemingly nowhere.
     夜幕降临 动物纷纷从各处冒出
248. And, among them, inevitably,
     而这之中 必然存在
249. are hunters.
     猎食者
250. One of the most voracious nocturnal predators
     其中最贪婪的夜间捕食者
251. is also one of the hardest to see.
     也最难寻觅它们的踪迹

来自《行星地球 第二季 第四集 Planet Earth S02E04 沙漠》第 248 行