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Botos are highly social
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Botos are highly social 亚马逊江豚是高度社会型动物

These botos are huge - two and a half metres long.
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These botos are huge - two and a half metres long. 这些亚马逊江豚体型巨大 身长达2.5米

Its waters are wonderfully rich.
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Its waters are wonderfully rich. 河水中的物种异常丰富

There are shrimp-like crustaceans - giant amphipods - as large as mice.
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There are shrimp-like crustaceans - giant amphipods - as large as mice. 这种长得像虾一样的甲壳动物 是一种大型端足类动物 它有老鼠那么大

They are the key scavengers in this lake.
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They are the key scavengers in this lake. 它们是湖里不可或缺的“清洁工”

80 percent of its species are found nowhere else on Earth,
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80 percent of its species are found nowhere else on Earth, 湖里80%的物种 在地球上其它地方都不存在

are mating flies.
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are mating flies. 其实是正在交配的幽蚊

Soon, millions upon millions of newly hatched lake flies are taking to the wing.
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Soon, millions upon millions of newly hatched lake flies are taking to the wing. 不久 成百上千万只新羽化的幽蚊 全都扇动着翅膀飞到空中

These two-metre wide craters are fish-made.
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These two-metre wide craters are fish-made. 这些2米宽的土丘是鱼儿们的杰作

Fastidiously maintained by the males, these bowls are courtship arenas.
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Fastidiously maintained by the males, these bowls are courtship arenas. 雄鱼一丝不苟地维护着坑巢 因为这里正是求爱的场所