来回: make a round trip; make a re ...往返: go there and back; come and ...来来往往: come and go; go to and fro; ...地: the earth往返，来来往往地: back and forth来回,往返,来来往往的: back and forth来来往往地: back and forth（前后）来回，来来往往: back and forth来来往往: come and go; go to and fro;coming and going in great number来来往往的: to-and-fro来来往往的人: comers and goers忽浮忽沉,来来往往: uand down来来往往；川流不息: come and go往返，来来: back and forth上上下下的来来往往的起伏的变动的: uand-down往返, 来回: out and home来来回回: back and forth; backwards and forthwards; backwards and forwards; come-and-go; coming and going; to and for; to and fro; up and down来来回回的: back and forth来回往返于: commute往返地，来回地: to and fro但是永远来来回回: but forevers come and go或前或后；来来回回: back and forth上上下下；来往返回: uand down来回的, 折回的, 反向的, 往返的: roundtrip人们来来回回地奔波着, 这是一个多么多么: when people run in circles its a very very
