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The geladas graze alongside walia ibex, which are also unique to these highlands.
站在獅尾狒身旁的是西敏羱羊，它們也是這片高原的特有物種
These rare creatures are usually very shy,
這種罕見的動物通常很膽小
but they drop their guard when the geladas are around.
但只要獅尾狒一來到身邊，它們便放松警惕
You might expect that grazers would avoid each other's patch,
你或許會認為食草動物總是盡量互相避讓
but this is a special alliance from which both partners benefit.
但是這種特殊聯盟能使雙方都得到好處
It's not so risky to put your head down if others are on the lookout.
它們可以毫無顧慮地埋頭吃草，因為旁邊有站崗的“哨兵”
Ethiopian wolves. They won't attempt an attack in broad daylight.
西門豺。它們一般不會在大白天發動進攻
But at dusk, the plateau becomes a more dangerous place.
可是一到傍晚，高原便成了一個危機四伏的地方
With the grazing largely over, there's a last chance to socialise before returning to the sleeping cliffs.
吃草活動基本結束，獅尾狒們抓住最后一點機會進行社交，然后返回睡覺的懸崖
An early warning system puts everyone on the alert.
“即時預警系統”使大家都警覺起來。
