单词：on-the-scene 

形容词

• 
  [1.a.on-the-scene] (同义词:[on-the-spot]  [on-the-scene]  )
• 
  注释列句：at the scene of action; "an on-the-spot reporter"; "on-the-spot inspections"; "an on-the scene newscast"
• 近义词 -> [on-site]