名词
中文翻译：光遮罩器
同义词：
['光阑，光阑片例句：1. The light occluder is blocking the path to the exit.（光遮罩器挡住了通往出口的路。）2. The engineer used a light occluder to adjust the focus of his camera.（工程师使用了一个光遮罩器来调整他的相机的焦点。）']
例句：
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1. The light occluder is blocking the path to the exit.
光遮罩器挡住了通往出口的路。
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2. The engineer used a light occluder to adjust the focus of his camera.
工程师使用了一个光遮罩器来调整他的相机的焦点。
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3.The doctor placed a light occluder over the patient's eyes to help him sleep.
医生用一个光遮罩器覆盖在病人的眼睛上，帮助他入睡。