北极没有陆地，只有厚厚的冰层。
其他岛屿是通过如火山作用的地质作用形成的，没有陆地生命。
The other islands, which emerged via geological processes such as volcanism, possessed no terrestrial life.
他们推测，触到的应该是珊瑚礁，因为这里并没有陆地。
No land was to be seen, and they therefore concluded that it was upon a bank of coral they had struck.
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