我们近几年已大大改善了我们的观测系统，特别是借助卫星系统，但仍有很大的差距，尤其是在深海区域。

We have significantly improved our observing systems over recent years through particularly satellite systems but there is still major gaps particularly in the deep ocean.

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的确，贫困，尤其是极端的贫困，可以增加人们的屈辱与无力感，特别是在那些贫富差距正在增长的地方。

Sure, poverty, especially in the extreme, can add to people's sense of humiliation and powerlessness, particularly where the gap between rich and poor is growing.

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然而，也有挑战，特别是基础设施方面，尤其是马拉·卡纳体育场。

However, there are challenges, particularly in terms of infrastructure, especially the Maracana stadium.

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