名词
中文翻译：缩放适配器
同义词：
['zoom lens', 'telephoto lens', 'focal length adapter']
例句：
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1. The camera has a built-in zoom lens that allows for easy adjustment of the focus.
这款相机内置了可调节焦距的镜头，方便用户调整焦点。
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2. When taking photos, it's important to use a telephoto lens to capture the distant subject.
拍照时，使用长焦镜头可以捕捉远处的主体。
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3. The photographer had to adjust the focal length adapter to get the best results from his equipment.
摄影师不得不调整焦距适配器，以从他的设备中获得最佳效果。