but they're not the only commuters in here. 但它们并非这里的唯一住客
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 它们在此完全不受外界因素的干扰
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. 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. 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. 它们还有一根坚韧的“安全索”