对这些母亲还进行了怀孕期间邻苯二甲酸酯调查，因为此阶段正是孩子大脑发育的最敏感阶段。
The mothers were tested for phthalates during pregnancy, the most sensitive time for a child's brain development.
从比较放松的阶段来到比较活跃的阶段，对新奇事物的敏感度有所提高。
From the more relaxed to the more vigorous levels, sensitivity to novelty is increased.
该报告的作者推测，男孩在胎儿发育阶段可能对此类化学袭击反应更为敏感，这就可以解释为什么男孩比女孩更有可能出现行为问题。
The foetal development of boys may also be more sensitive to this kind of chemical assault, the authors speculate, which could explain why boys are more likely to have behavioural problems than girls.
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