Dugongs are the largest herbivores in the sea. 儒艮是海洋里最大的食草动物

88. The largest expanse grows in the shallow waters of Shark Bay, in Western Australia.
    世界上最大的草海在澳大利亚西部的鲨鱼湾
89. These vast aquatic grasslands stretch for fifteen hundred square miles
    这片广大的海洋牧场 面积可达1500平方英里
90. and, like terrestrial prairies, they support herds of grazers -- Dugongs.
    像陆地上的大草原一样 这里也养育了大量的食草动物--儒艮
91. Dugongs are the largest herbivores in the sea.
    儒艮是海洋里最大的食草动物
92. They can be three meters long and weigh half a ton
    可以长到3米长,半吨重
93. and they eat nothing but seagrass, mostly the fleshy risomes, which they excavate with their mobile lips.
    它们除了海草什么都不吃 他们不停移动嘴唇,把海草的肉质根茎送到口中
94. A herd can clear a patch of seagrass the size of a football pitch in a single day.
    这群儒艮可以在一天内吃掉足球场般大小的海草

来自《行星地球 第一季 第九集 Planet Earth S01E09 海洋》第 91 行