调节汽车前灯远近光的开关: switch for dipping a motor vehicle's headlights
纯粹: 1.(不搀杂别的成份, 引伸指德行完美无缺) pure; sheer; complete; unadulterated 短语和例子一个纯粹的人 a pure person2.(单纯地) solely; purely; only 短语和例子纯粹是他的不是。 it is completely his fault. 纯粹是假造事实。 it is a pure fabricatio