backward and forward

• 来回地, 前后地

英英释义

Adverb:

1. moving from one place to another and back again;

   "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"
   

近反义词

【近义词】

• to and fro 往复
• back and forth 来回地