of a 12-storey building. 12层楼的高度

44. one of the fastest-growing organisms on the planet...
    为地球上生长最快的生物之一提供了物质基础
45. ..giant kelp.
    巨藻
46. Towering forests can eventually reach the height
    高耸的巨藻森林最终可以达到
47. of a 12-storey building.
    12层楼的高度
48. These forests are nurseries for young horn sharks.
    这些森林是幼年角鲨生长的温床
49. As the sun begins to set,
    太阳落下时
50. they leave their daytime shelter
    它们离开白天的庇护所

来自《行星地球 第三季 第二集 Planet Earth S03E02 海洋》第 47 行