送交者: 湘女 于 2009-05-07, 13:07:47:

回答: about 10km. 由 steven 于 2009-05-07, 12:53:38:

• hard to say, swiming in ocean is tricky, tide and currents - steven (171 bytes) 2009-05-07, 13:15:38 (323174)
  • 确实，方向就很难掌握。 (无内容) - 湘女 (0 bytes) 2009-05-07, 13:19:32 (323177)

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