14 篇文章
But, when new challenges arrive, they can struggle to cope.
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But, when new challenges arrive, they can struggle to cope. 但当新挑战来袭 它们只能尽力去应对

presents challenges for the animals living there.
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presents challenges for the animals living there. 岛上的动物也要面临挑战

reflect the challenges faced by all life on Earth.
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reflect the challenges faced by all life on Earth. 正如地球上所有生命都要面临的挑战

But these forests hold fewer challenges for the more mobile.
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But these forests hold fewer challenges for the more mobile. 不过这些森林对于更灵活的动物来说 却没有什么挑战性