range finder
柯林斯词典
1. N-COUNT A range finder is an instrument, usually part of a camera or a piece of military equipment, that measures the distance between things that are far away from each other. 测距仪
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1. N-COUNT A range finder is an instrument, usually part of a camera or a piece of military equipment, that measures the distance between things that are far away from each other. 测距仪