Group rubbing not only refreshes their coats, 集体“按摩”不仅能清洁它们的皮毛

82. they gradually warm and begin to support more life.
    河水渐渐变暖 养育的动物也多了起来
83. Indian rivers are home to the world's most social otter -
    印度河里住着世界上最具社会性的水獭
84. smooth-coated otters form family groups up to 17 strong.
    印度水獭的一个家族可多达17名成员
85. Group rubbing not only refreshes their coats,
    集体“按摩”不仅能清洁它们的皮毛
86. but strengthens social bonds.
    也能增强群体内部团结
87. When it comes to fishing
    当它们去捕鱼时
88. there is real strength in numbers.
    群体合作能保证它们屡战屡胜

来自《行星地球 第一季 第三集 Planet Earth S01E03 淡水》第 85 行