单词：back and forth
来回地
back and forth的用法和样例：
例句
- She spent hours every day in the tower room, reading and rereading.她每天都要在这个塔室里消磨好几个小时，读着，反复地读着。
词汇搭配
- bat back and forth详细考虑,反复讨论...
【近义词】
- backward and forward来回地, 前后地...
- to and fro往复