单词	copper-bottomed
释义	copper-bottomedˌcopper-ˈbottomed adjective Examples EXAMPLES FROM THE CORPUS This was not only copper-bottomed security, it was a chance to play with the big numbers and see what happened. able to be depended on:  a copper-bottomed guarantee
随便看	Formula One formulate formulation fornicate fornication Forrest Gump forsake forsooth Forster, E.M. forswear Forsyth, Bruce Forsyth, Frederick fort forte Fortean Times Forth forth Forth Bridge forthcoming forthright forthwith fortieth fortification fortified wine fortify

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