有个字符串STR="qqqqqqqqqqqqqqqq^524bb200-c82e-474e-a954-55753e436294.jpg^
rrrrrrrrrrrrrrrrrrrr^d9e88dbc-9d5f-4580-a5d2-73712c785176.jpg^WWWWWW
^524bb200-c82e-474e-a954-55753e436294.jpg^"从这个字符串里删除两个^524bb200-c82e-474e-a954-55753e436294.jpg^
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^524bb200-c82e-474e-a954-55753e436294.jpg^"从这个字符串里删除两个^524bb200-c82e-474e-a954-55753e436294.jpg^
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