simpleinstructure;构造简单
simple-minded;seeingthingstoosimply;头脑简单
notsimple;fairlycomplicated;remarkable;不简单
She'smarveltobeabletoshootwithsuchaccuracy.她的枪法那么好,真不简单。
dothingsinacasual[perfunctory]way;简单从事
takeanaiveview;oversimplifyaproblem;简单地看问题