The krill becomes concentrated as the spiralling net of bubbles draws inwards. 螺旋型的气泡网逐渐收紧,把磷虾聚在一起

62. Diving into the heart of the swarm,
    潜入到虾群中后
63. teams of whales spiral round each other in close coordination.
    座头鲸会共同配合 紧密协作
64. Now they turn, blasting air from their blowholes, and ascend towards their prey.
    现在座头鲸转身 利用呼吸孔吐气 喷向猎物
65. The krill becomes concentrated as the spiralling net of bubbles draws inwards.
    螺旋型的气泡网逐渐收紧,把磷虾聚在一起
66. The team of whales work round the clock for the boom is short-lived.
    时光短暂,座头鲸昼夜不停捕食
67. Summer is already fading
    短暂的夏天正逐渐消失
68. and the whales will soon be forced north as winter returns.
    很快冬季又到了 这些鲸鱼将不得不前往北方

来自《行星地球 第一季 第六集 Planet Earth S01E06 冰雪世界》第 65 行