患脑膜炎与患肺炎相比，女性与男性相比，前者距离衰减幅度更大，并且在母亲平均教育水平较低的地区距离衰减幅度也更大。

Distance decay was steeper for meningitis than for pneumonia, for females than for males, and for areas where mothers had less education on average.

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例如用手机通话时可以使用扬声器或有线耳机，这可以使手机尽量与身体保持距离，大幅度减少辐射。

Using your cell phone's speaker or connecting a wired headset— while keeping the handset away from your body — drastically reducesRF exposure.

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图1 - 3距离说明了代表产品发布的每次循环中的增长幅度。

Figure 1-3 illustrates this growth with the growing size of the circles representing the releases produced.

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