| 词汇 | copper-bottomed |
| 释义 | copper-bottomedˌcopper-ˈbottomed adjectiveadj able to be depended on 完全可靠的，稳妥保险的 a copper-bottomed guarantee 可靠的保证 Examples from the Corpus copper-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 Dictionary copper-bottomedˌcopper-ˈbottomed adjectiveadj completely safe to buy, invest in, or have confidence in State pensions are supposed to have a copper-bottomed guarantee. |
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