短語詞組短語back k and forth 來回地Back -and forth communication 反反復(fù)復(fù)的交流back and forth method 往返法;嘗試法;選擇法Rotate back and forth 往返旋轉(zhuǎn)Shuttling Back and Forth 左右穿梭Talk Back And Forth 言來語去B back and forth 來回地;來回roll back and forth 舒卷Number back and forth 多少人來來回回 返回 back and forth