1. An unexplained error occurred while your computer tried to access server %1. �������ͼ���ʷ�����%1ʱ���������͵Ĵ���
2. Futhermore, almost one in fie (18%) had a family history of sudden unexplained deaths before the age of 45. ���ң��������֮һ�����ߣ�18%����������45����ǰ��������ԭ�������ļ���ʷ��
3. Nevertheless, astronomers have speculated for years that dark matter could power certain unexplained sources of light in the cosmos. Ȼ���⼸�꣬����ѧ�һ�����������Щ�������͵Ĺ⣬�����������ʡ�
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adj.
1. not explained
2. having the reason or cause not made clear