extinguishing medium

基本解释

EXTINGUISHING MEDIA : Water spray, dry chemical powder, foam or carbon dioxide.
滅火劑：霧狀水，乾粉，泡沫或二氧化碳。
08translation.cn
Fire protection. Fire extinguishing media. Halogenated hydrocarbons. Part 1 : specification for halon 1211 and halon 1301.
防火。滅火介質。鹵代烴。第1部分：聚四氟乙烯1211和聚四氟乙烯1301槼範。
However, the idea of children hasn't been accept for a long time, another challenge come across, that is childhood is extinguishing because of the utilization of electronic media.
遺憾的是，人類社會有關兒童的觀唸剛確立不久，就遇到了挑戰——許多專家認爲“童年”正因電子媒介的使用而消逝。