人的认识是有限的,有害与否,光比较有限的几个指标俺觉得不够,you don't know you don't know.

回答: power line is not harm to your health.kabab2012-09-04 16:02:06

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回复:人的认识是有限的,but you sill need to make judgement. -kabab- 给 kabab 发送悄悄话 (0 bytes) () 09/04/2012 postreply 20:13:14

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