参考词典中backward and forward的常规释义:
基本释义
英英解释
- moving from one place to another and back again
[同]
back and forth, backward and forward, to and fro
[例]
- he traveled back and forth between Los Angeles and New York
- the treetops whipped to and fro in a frightening manner
- the old man just sat on the porch and rocked back and forth all day
点击查看……