a back-and-forth motion
英
美
来回移动
a back-and-forth motion的用法和样例:
例句
The shuttle moves backwards and forwards through the warp.
梭子在经线中来回移动。
The conjuror made a few passes with his hand overthe hat.
魔术师用手在帽子上方来回移动了几下。
a back-and-forth motion的相关资料:
临近单词
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