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1. The viewfinder onthe camera is very small but still allowsyou to see the entire scene.
相机上的取景器非常小，但仍然允许你看到整个场景。
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2. The photographer used a viewfinder to adjust his focus beforetaking the picture.
摄影师使用取景器来调整他的焦点，然后拍摄照片。
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3. Theengineer used the viewfinder to checkthe alignment of the gears before startingthe machine.
工程师使用取景器来检查齿轮的对齐情况，然后启动机器。