safelight

/seyf-lahyt/US // ˈseɪfˌlaɪt //UK // (ˈseɪfˌlaɪt) //

安全灯,安全光,安全照明,安全阀

Definitions

n.名词 noun

1
Photography.
- : a darkroom light with a filter that transmits only those rays of the spectrum to which films, printing paper, etc., are not sensitive.