A movie rating that allows admission only to persons of a certain age, usually 17, unless accompanied by a parent or guardian. R级，电影的限制级一种电影分级，允许一定年龄以下(通常为17岁)的人在家长或保护人陪同下才能观看。
A faint glow enveloping the high-field electrode in a corona discharge, often accompanied by streamers directed toward the low-field electrode. 电晕在电晕放电中在高压电极出现的一种微弱光辉，常伴随有朝向低压电极的电流
The tour will be accompanied by a trained nurse. 该旅行团将由一名受过专门培训过的护士陪同。
The atomic explosion is always accompanied by huge fireball. 原子弹爆炸总是伴随着巨大的火球。
