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

Up here, there are fewer predators to eat their eggs and fry.
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Up here, there are fewer predators to eat their eggs and fry. 只因上游很少有捕食鱼卵 和鱼苗的掠食者

Across the northern hemisphere salmon, returning from the ocean to their spawning grounds,
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Across the northern hemisphere salmon, returning from the ocean to their spawning grounds, 鲑鱼穿越整个北半球 从海洋回到它们的产卵地

battle their way for hundreds of miles upstream.
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battle their way for hundreds of miles upstream. 奋力逆流而上数百英里

But sensory nodes on their head and body
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But sensory nodes on their head and body 可是它们头上和身上的感官突起

They begin their hunt at night.
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They begin their hunt at night. 夜幕降临 它们开始捕猎

monsters stir in their dens.
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monsters stir in their dens. 一种怪物便在巢窟中苏醒

bamboo shrimps can just sit and sift out passing particles with their fan-like forearms.
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bamboo shrimps can just sit and sift out passing particles with their fan-like forearms. 拟匙指虾只需趴在河底 用它们的扇形前臂从流水中过滤出食物颗粒

In their upper reaches, mountain streams are full of energy.
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In their upper reaches, mountain streams are full of energy. 上游地段的山涧充满活力

At last they are over the highest barrier that lies in their way.
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At last they are over the highest barrier that lies in their way. 最后它们终于翻越了旅途中最高的障碍