| 单词 | to and fro |
| 释义 | adverb | noun to and froto and fro1 /ˌtu ən ˈfroʊ/ adverb moving in one direction and then back again—to-and-fro adjective [only before noun] adverb | noun to and froto and fro2 noun [uncountable] informal continuous movement of people or things from place to place |
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