(noun.) an optical device for viewing photographic transparencies.
校对:露辛达
双语例句
One introduced himself as Nicholas Wood, viewer at Killingworth, and then presented his companion, George Stephenson, of the same place. 鲁伯特·萨金特·荷兰.历史性发明.
There it was exhibited to select companies of female viewers, in whose gentle bosoms it awakened implacable feelings. 查尔斯·狄更斯.小杜丽.