Crammed into this scrum, the birds are remarkably good-natured. But they have to be. 这些企鹅性情特别温和 这是环境使然

112. They lock together in tightly-packed huddles as they struggle to keep warm.
     它们紧紧挤成包围圈以此取暖
113. Speeding up the action reveals how these huddles constantly shift and change
     在快镜头下我们可以看到包围圈在不断地变动
114. as each penguin works its way towards the warmer interior.
     每只企鹅都要变换位置以进入更温暖的内部
115. Crammed into this scrum, the birds are remarkably good-natured. But they have to be.
     这些企鹅性情特别温和 这是环境使然
116. If the huddle breaks, even for a moment, precious heat escapes.
     如果包围圈散了,哪怕就一小会儿 宝贵的热气也会消散
117. It's imperative they reform as quickly as possible,
     它们必须尽最大的努力重新组成队列
118. for only by acting as one
     因为只有团结成一体

来自《行星地球 第一季 第六集 Planet Earth S01E06 冰雪世界》第 115 行