- in a constant movement backwards and forwards or from side to side来来往往地, 往复地：
she cradled him, rocking him to and fro.
她把他放在摇篮里, 不停地摇着。
no obj.(be toing and froing)
1- move constantly backwards and forwards来来回回, 往复移动：
the ducks were toing and froing
鸭子不停地来回走动
as noun toing and froing it does cost a lot, all this toing and froing up to London.到伦敦的这些来来回回花费真不小。
1.1
- repeatedly discuss or think about something without making any progress反复讨论（或思量）。
in sing.
1- constant movement backwards and forwards来来往往, 往复：
Wilkie watched the to and fro of their dancing.
威尔基看着他们来来回回地跳舞。
1.1
- constant change in action, attitude, or focus（行为、态度或焦点问题上的）反复, 变化无常。