dilly-dally       
verb [ I ]  old-fashioned informal uk/ˈdɪl.iˌdæl.i/ us/ˈdɪl.iˌdæl.i/
 磨蹭;犹豫不决
to waste time, especially by being slow, or by not being able to make a decision
  Don't dilly-dally - just get your bags and let's go! 别犹豫了——干脆拿上东西我们一起走吧! 
 Synonyms: procrastinatestall