Marines with rifles guarded them...手持步枪的海军陆战队士兵监视着他们。The prisoners were closely guarded.囚犯受到严密监视。The player was guarded closely by her opponent.那名运动员被她的对手紧紧地看住。When they exchanged ideas,their talk was too guarded.在他们交换意见...
那是个偏心轮.That is an eccentric wheel.采用偏心轮和弹簧结构, 研制了口腔修复体疲劳寿命测试机.Using eccentric wheel and spring, an instrument was developed in this study.其整个系统主要由偏心轮夹紧机构、液压泵站和单片机控制系统组成.The whole system mainly consists of eccentric cam h...