A movie rating that allows admission only to persons of a certain age, usually 17, unless accompanied by a parent or guardian. R級，電影的限制級一種電影分級，允許一定年齡以下(通常為17歲)的人在家長(cháng)或保護人陪同下才能觀(guān)看。
A faint glow enveloping the high-field electrode in a corona discharge, often accompanied by streamers directed toward the low-field electrode. 電暈在電暈放電中在高壓電極出現的一種微弱光輝，常伴隨有朝向低壓電極的電流
The tour will be accompanied by a trained nurse. 該旅行團將由一名受過(guò)專(zhuān)門(mén)培訓過(guò)的護士陪同。
The atomic explosion is always accompanied by huge fireball. 原子彈爆炸總是伴隨著(zhù)巨大的火球。
