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back and forth
英汉字典
英英字典
解释
来来往往地;
来回;
反复;
同义
back and forth
backward and forward
to and fro
词性
r
解释
moving from one place to another and back again
示例
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