- Frigatebirds spend months continuously airborne at sea
军舰鸟可以在海上持续待几个月 - but at nesting time, they come to Ascension from all over the ocean.
不过到了筑巢的时候 它就从海洋各处飞回到阿森松岛 - The island's barren slopes of volcanic ash and lava
一个充满了火山灰和火山岩的不毛之地 - might seem to offer perfectly good sites for a nest
却提供了一个筑巢的好地方 - but the frigates choose an even more isolated site
不过军舰鸟要挑选偏僻的地点 - Boatswain Bird Island, a lonely pillar, just of Ascension's coast.
水手长鸟岛 阿森松岛旁边的一个偏僻小岛 - Frigates are the world's lightest bird, relative to their wingspan
阿森松军舰鸟是世界上最轻的海鸟之一 翼展特别长
might seem to offer perfectly good sites for a nest 却提供了一个筑巢的好地方
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