indistinctly       
adverb uk/ˌɪn.dɪˈstɪŋkt.li/ us/ˌɪn.dɪˈstɪŋkt.li/
 不清楚地,模糊地
in a way that is not clear
  He mumbled indistinctly, and I couldn’t tell what he wanted. 他含糊不清地嘟囔着,我不知道他想要什么。 
 The mangroves beyond the stream loomed indistinctly through the morning haze. 溪流外的红树林在晨雾中若隐若现。 
 See: indistinct
 - More examples
- The musical accompaniment competes with the actors, who tend to speak too quietly and indistinctly anyway.
- The track runs, sometimes indistinctly, through stunted bush and occasional clearings to the tree line.
- They speak so rapidly and indistinctly that many of their words are lost.