BBC听力 | 海洋岛屿 11

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Crabs may not seem unusual

蟹似乎并非不寻常

But there's one kind here that's like no other.

但这里有一种与众不同

On this little island in Vanuatu lives a real oddity.

在瓦努阿图的这个小岛上生活着一种真正的怪物

It's the largest terrestrial invertebrate on Earth

是地球上最大的陆栖无脊椎动物

The robber crab.

——盗蟹

The biggest can weigh up to four kilograms

最大的体重超过4公斤

The same as a newborn baby

像新出生婴儿般大小

And have a leg span of one meter.

一腿能跨1米

It's a hermit crab on steroids.

像用了激素的寄生蟹

At night, the huge "robbers" really come alive.

晚上“大盗”开始活跃起来

Although these crabs are found throughout the Pacific

虽然这种蟹在太平洋能到处找到

It's only on undisturbed islands that you can see them in such numbers.

但只有在人迹罕至的岛屿上才能看到它们数量如此众多

Exactly why robber crabs have grown so big is a mystery

为什么盗蟹长得如此之大是个谜团

But with so few creatures making it to these remote islands

只有少数的动物能到达这些偏远的岛屿

The giant crustaceans seem to have filled a niche

大甲壳纲动物似乎填补了

normally taken by medium-sized mammals.

通常中型哺乳类动物的位置

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