| 单词 | copper-bottomed |
| 释义 | copper-bottomed From Longman Dictionary of Contemporary Englishcopper-bottomedˌcopper-ˈbottomed adjectiveable to be depended ona copper-bottomed guaranteeExamples from the Corpuscopper-bottomed• This was not only copper-bottomed security, it was a chance to play with the big numbers and see what happened.From Longman Business Dictionarycopper-bottomedˌcopper-ˈbottomed adjective completely safe to buy, invest in, or have confidence inState pensions are supposed to have a copper-bottomed guarantee. |
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