backward and forward

• 来回地, 前后地

backward and forward的英文翻译是什么意思，词典释义与在线翻译：

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"
   

backward and forward的用法和样例：

例句

1. He understood automobile engines backwards and forwards.
   他对汽车发动机了解得一清二楚。

backward and forward的相关资料：

近反义词

【近义词】

• to and fro 往复
• back and forth 来回地