viewer
n
1 person who views sth 观看者; 观察者
viewers of the current political scene 观察当前政治形势的人.
2 person watching a TV programme电视观众
regular viewers of `Panorama´ `综合节目'的固定观众.
3 device for viewing photographic transparencies摄影透明正片观看器
a slide viewer 幻灯式摄影正片观看器.