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Warning: fclose() expects parameter 1 to be resource, bool given in /www/wwwroot/www.wendadaohang.com/inc/function.php on line 2475 为什么两个轮子的摩托车,电动车,自行车它行驶中不会倒下,而停下来时你不用脚撑着地时,它就会倒下? - www问答网