短語詞組短語back k and forth 來廻地Back -and forth communication 反反複複的交流back and forth method 往返法;嘗試法;選擇法Rotate back and forth 往返鏇轉(zhuǎn)Shuttling Back and Forth 左右穿梭Talk Back And Forth 言來語去B back and forth 來廻地;來廻roll back and forth 舒卷Number back and forth 多少人來來廻廻 返回 back and forth