短语词组短语caught flat -footed 无计可施;陷入困境;堕入窘境;不意被困flat -footed 手足无措catch flat -footed 乘其不备抓住;使大吃一惊Flat -footed Walk 平走慢步;马的慢四拍步样catch someone flat -footed 乘人毫无准备Charley walked in flat -footed 查利脚跟站稳了 返回 flat-footed