送交者: HunHunSheng 于 2008-06-27, 23:25:47:

回答: 我读过一个报道, 说每天手和脸晒10分钟就够, 但没说肤色. 由 湘女 于 2008-06-27, 23:23:07:

• 15 minutes or so a few times a week without sunscreen - 湘女 (366 bytes) 2008-06-28, 13:14:34 (239115)
  • more details: sun exposure 10 to 15 minutes twice a week - 湘女 (61 bytes) 2008-06-28, 13:19:30 (239116)

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