open to doubt or suspicion; "the candidate''s doubtful past"; "he has a dubious record indeed"; "what one found uncertain the other found dubious or downright false"; "it was more than dubitable whether the friend was as influential as she thought"- Karen Horney 同义词：doubtful, dubious, in question,
例句与用法
1.
The widening of the gap gives great influence on people ' s minds . some people begin to doubt that " is it possible for china to achieve its purpose of the common prosperous ? " they take a dubitable attitude towards the socialist road with chinese characteristics 这种现象的产生，在人们的思想上引起了强烈的反响，也造成了很大的混乱，有人据此提出“中国能否实现共同富裕目标”的疑问，怀疑有中国特色的社会主义道路。
2.
The ids of the paper is network - based anomaly detection system . with the help of data mining technology , we bring forward a measure to describe the normal state of the network traffic and user behavior and extracting the useful rule from large network data . so we can establish the knowledge warehouse which describe the normal state of the network traffic and user behavior . the knowledge warehouse can be the standard in order to judge the normal state . we can find the dubitable connections according to account the state and anomly instances of connections 论文在描述网络应用和用户行为时采用数据挖掘技术从海量的网络数据中提取有用的规则，构建了一个描述正常状态下的网络应用和用户行为的规则集，这个规则集是用来判断网络应用和用户行为是否正常的标准，论文根据这个标准分析当前网络连接的异常情况，将可疑的连接找出来。
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