老齡化。發達國家得肺癌的人比中國多,最大的原因是老齡化
所有跟帖:
• 就煩你們丫這種睜著眼睛說瞎話的。 -北京頑主- ♂ (0 bytes) () 02/19/2016 postreply 00:51:13
• 就煩你們丫這種睜著眼睛說瞎話的。 -北京頑主- ♂ (0 bytes) () 02/19/2016 postreply 00:51:13
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