31 篇文章
...A rare water hole.
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...A rare water hole. 一个珍贵的水坑

They are very rare,
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They are very rare, 雪豹数量稀少

Nearly a hundred sailfish have surrounded a single school of baitfish. It's very rare to see so many of these hunters in one place.
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Nearly a hundred sailfish have surrounded a single school of baitfish. It's very rare to see so many of these hunters in one place. 近100条旗鱼的包围了这群饵鱼 很少能见到上百条的旗鱼在同一个地方出现

If large animals are rare in jungles
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If large animals are rare in jungles 如果说雨林中的大型动物是相当稀罕

but each plant has it's own particular strategy for making the most of this rare opportunity.
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but each plant has it's own particular strategy for making the most of this rare opportunity. 在这个难得的机会面前 每种植物都有自己非常独特的生长方式

0nce an extremely rare sight, polar bears have recently been seen over 60 miles from the shore.
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0nce an extremely rare sight, polar bears have recently been seen over 60 miles from the shore. 曾经有人在离海岸60英里处发现了北极熊 这种事情是极难碰到的

and, when day breaks, a rare chance to feed.
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and, when day breaks, a rare chance to feed. 而且到了白天还有难得的进食机会

It's a rare chance for them to build up their food reserves.
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It's a rare chance for them to build up their food reserves. 这是它们仅有的积累食物储备的机会

To see a group walking boldly in the open is extremely rare.
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To see a group walking boldly in the open is extremely rare. 这么一大家子在光天化日之下 外出实属罕见

These rare creatures are usually very shy
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These rare creatures are usually very shy 这种罕见的动物通常很胆小