单词	天氣一冷
释义	天氣一冷the moment the weather gets cold;
随便看	operational self test operational semantics operational sequence operational sequence，os operational sequential diagram operational service period operational service state operational settings operational sign operational specification operational speed operational staff operational staff study operational stage operational standby program operational-stop instruction operational store operational strategy operational subsystem operational support operational support and analysis operational support directive operational support directive，osd operational support equipment operational support equipment--ose