roving       
adjective [ before noun ] uk/ˈrəʊ.vɪŋ/ us/ˈroʊ.vɪŋ/
 漫游的,流浪的
travelling from place to place
  And now a live report from our roving reporter, Martin Jackson. 下面是我们的流动记者马丁‧杰克逊发回的现场报道。 
 A roving band of performers will tour schools around the country to boost pupils' interest in verse.
 - More examples
 - A roving camera crew interviewed participants and spectators.
 - He became known as a roving diplomat travelling to trouble spots across the globe.
 - His book describes all the horrors he has seen as a roving correspondent in Africa's war zones.
 
Idiom   
have a roving eyeidiom  old-fashioned humorous 色迷迷;总找机会寻花问柳
If you say that someone has a roving eye, you mean that they are always sexually interested in people other than their partner.
  By his own admission he had a roving eye and was easily infatuated. 
Although he's going out with one of the world's most beautiful women, the actor still has a roving eye.