$_nowclass=$empire->fetch1("select * from {$dbtbpre}enewsclass where classid='$r[classid]'");
$listtemp='
';
摄影史揭秘 照相机究竟何时诞生
The camera is a device that records visual images, and its invention has a long history. The first camera obscura was invented in China during the 5th century, but it was not until the 19th century that the first practical camera was developed. The camer