safe-light
柯林斯词典
1. N a light that can be used in a room in which photographic material is handled, transmitting only those colours to which a particular type of film, plate, or paper is relatively insensitive 安全灯[photog]
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1. N a light that can be used in a room in which photographic material is handled, transmitting only those colours to which a particular type of film, plate, or paper is relatively insensitive 安全灯[photog]