Iris diaphragm: The adjustable hole in a camera to control the amount of light passing through the lens. See Diaphragm.是什么意思_Iris diaphragm: The adjustable hole in a camera to control the amount of light passing through the lens. See Diaphragm.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句