Meteorologists say it is impossible to explain fully how these things happen.

气象学家表示不可能完全解释清楚为什么会发生这些情况。

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One explanation could be that women who breastfeed may lead healthier lifestyles than women who don't, but we don't know the mechanisms that would explain this fully, and not enough work has been done in this area.

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Nobody can explain it fully.

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The most recent decision by the Court does not fully explain it either.

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