| 单词 | up-and-down |
| 释义 | up-and-down ˌup-and-ˈdown /ˌʌp.ənˈdaʊn/ adjective ► F0 sometimes successful and sometimes not successfulThesaurus+: ↑Unsuccessful (people and things)Thesaurus+: ↑Successful (things or people) |
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