在遥远的南方海域上有一群岛屿。

In the remote southern seas there is a cluster of islands.

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一些细小的变化可能更危险，比如南方海域吸收二氧化碳的能力最近下降了。

Some smaller changes are arguably more ominous, like a recent drop in the southern seas' ability to absorb carbon.

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主要的洋流将这其中大部分的铁带往北方的海域，而南方海域中的铁含量则相对较少。

The prevailing currents then carry most of this iron north, leaving the waters to the south with less.

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