也有证据表明，母亲超重，会导致孩子的学习能力出现问题。

There is also some evidence linking mothers' excess pounds to mild learning problems in their children.

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他提到，很多母亲也有营养不良问题，这方面的人道援助耗资巨大。

And, noting that many mothers are also malnourished, he said the humanitarian cost is enormous.

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