backwards and forwards
释义
来回地，反复地：朝着与你所面对的方向相反的方向，或者是与通常的方向相反的方向。
例句
1·She rocked backwards and forwards on her chair.
她坐在摇椅上前后摇晃着。
《牛津词典》
2·She was rocking backwards and forwards in her seat.
她在座位上前摇后晃。
《牛津词典》
3·Tom moved his brush carefully backwards and forwards and stepped back to look.
汤姆小心地前后移动他的刷子，然后后退一步看。
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