目录日志分类设置错误日志设置错误日志等级生效时间二进制日志（binlog）作用配置慢日志（slow_log）作用general_log 业务sql总结日志分类
Im making a game in xna where a tank has to move over a landscape. I need to be able find the bottom of the tank when it is rotated so I can make it move up and down as the player goes over the landsc
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