But at dusk the plateau becomes a more dangerous place. 可是一到傍晚 高原便成了 一个危机四伏的地方

58. if others are on the lookout.
    因为旁边有站岗的“哨兵”
59. Ethiopian wolves -
    西门豺
60. they won't attempt an attack in broad daylight.
    它们一般不会在大白天发动进攻
61. But at dusk the plateau becomes a more dangerous place.
    可是一到傍晚 高原便成了 一个危机四伏的地方
62. With the grazing largely over
    吃草活动基本结束
63. there's a last chance to socialise before returning to the sleeping cliffs.
    狮尾狒们抓住最后一点机会进行社交 然后返回睡觉的悬崖
64. An early warning system puts everyone on the alert.
    “即时预警系统”使大家都警觉起来

来自《行星地球 第一季 第二集 Planet Earth S01E02 山地》第 61 行