| 摘要 |
A picture frame for displaying a picture comprises a first layer of rectangular back cover having a first pair of identical longer side edges and a first pair of identical shorter side edges, a second layer of rectangular back cover having a second pair of identical longer side edges and a second pair of identical shorter side edges, and a transparent front cover, the transparent front cover having a transparent front panel and two flanges flanging at two opposite side edges of the transparent front panel, both the first layer of rectangular back cover and the second layer of rectangular back cover being deposed between the transparent front panel and the two flanges, and firmly held by the two flanges.
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