在下面句子中like a shadowbox effect是什么意思？谢谢
在加拿大 i am looking for picture frames 6 x 8 or 7 x 9 like a shadowbox effect so that the glass does not touch the picture. A depth of about an inch from the glass to the back.Glass needs to be already in router of the frame and the back has an eas...华人论坛