Three of the top five are once again island nations: Cape Verde plus the Seychelles and Mauritius, this year's winner, displacing Botswana.

排名前5中再一次出现了有3个国家是岛国得情况：佛得角、塞舌尔以及取代博茨瓦纳荣登今年榜首的毛里求斯。

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Al Island is currently the main tourist destination in Cape Verde as it has the largest international airport in the country.

尔岛是佛得角目前的主要旅游目的地，萨尔岛国际机场是佛得角最大的机场。

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Helena, Ascension Island and Cape Verde.

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"A key finding of our analysis was that the most highly threatened species tend to relatively cheap to save on account of their small range sizes, such as the Razo lark, which lives on the island of Razo in the Cape Verde islands, " said Mr McCarthy.

BBC: Science & Environment