283 篇文章
but they're not the only commuters in here.
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but they're not the only commuters in here. 但它们并非这里的唯一住客

and they're still getting bigger
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and they're still getting bigger 它们仍在不断扩大

They're cave swiftlets.
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They're cave swiftlets. 它们就是洞金丝燕

They're totally dependant on the digested remains of food that's brought here from outside.
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They're totally dependant on the digested remains of food that's brought here from outside. 它们完全依赖的食物消化残渣 都是来自于外界

where they're well protected from the outside elements
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where they're well protected from the outside elements 它们在此完全不受外界因素的干扰

And while they're up here
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And while they're up here 它们高悬在洞穴上方时

Like packs of sharks, they're on the prowl for sleeping cichlids.
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Like packs of sharks, they're on the prowl for sleeping cichlids. 它们像是一群鲨鱼 一边游一边寻找熟睡中的慈鲷

Driven by gravity, they're the most erosive forces on the planet.
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Driven by gravity, they're the most erosive forces on the planet. 它们借助地心引力 成为地球上最大的侵蚀力量

They're the only large predator in these icy waters.
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They're the only large predator in these icy waters. 它们是这些冰水中唯一的大型掠食动物

they're still held by a silicon safety line.
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they're still held by a silicon safety line. 它们还有一根坚韧的“安全索”