inactive: applies to anyone or anything not in action or in use or at work: a playwright who's been ~ for several years.   （active活跃积极，表示忙碌being busy, doing a lot of things，如although he's nearly 80, he is still very active尽管快80岁了，他还是十分活跃，如they were both politically active他俩政治上都很活跃，如active involvement/participation/support/resistance积极参与/参加/支持/抵抗）


idle: applies to persons, their powers, or implements that are not busy or occupied: tractors were ~ in the fields.   implement工具器具


inert: as applied to things implies powerlessness to move or to affect other things: ~ ingredients in drugs; as applied to persons it suggests an inherent or habitual indisposition to activity: an ~ citizenry uninterested in social change.   （indisposition不想，是disposition性格倾向的反义词 )


passive: implies immobility or lack of normally expected response to an external force or influence and often suggests deliberate submissiveness or self-control: a ~ individual incapable of strong emotion.   (immobile静止不动的mean completely still，如Joe remained as immobile as if he had been carved out of rock乔一动不动，仿佛一尊石雕)     submissive顺从，self-control自控力: 调节心态的能力，被动一般不表示顺从和自控力，两个词没有采用


supine: applies only to persons and commonly implies abject or cowardly inertia or passivity as a result of apathy or indolence: remained ~ in the face of verbal abuse.


inactive不活跃: 泛指不工作活动使用，idle空闲: 表示不忙碌占用，inert惰性: 指某物不能影响它物，或某人不愿活动，passive被动: 表示静止不动或缺乏反应，supine苟安、得过且过: 只形容人，表示因消极麻痹而被动懒惰，显得可怜懦弱


记忆方法: 1) 首字母IIIPS想成PS III一台PS 3<==空闲       PS是play station缩写  

         2) 空闲的意思是不活动工作mean not engaged in work or activity.首字母IIIPS想成PS III一台PS 3<==空闲    （engage基本的意思是战场上交锋交战implies meeting and combating between enemy forces，引申为参与接触订婚互动等，这里表示参与）