stumbler
/'stʌmblə/a walker or runner who trips and almost falls 、 someone who makes mistakes because of incompetence
noun [专属名词] 绊跌者；有过失者；结结巴巴说话者；令人迷惑之事
The Network Stumbler finds open wireless access points.NetworkStumbler 软件则能查找出开放的无线访问节点.
