英语词汇“toughen”的读音、翻译、释义、用法及例句-智慧网

词汇	toughen
释义	toughentoughenD.J.:[ˈtʌfn]K.K.:[ˈtʌfən]vt. & vi.1.■(使某物[人])坚韧, 坚强, 强硬
随便看	hard rock raise boring machine hard-rock tunnel boring hard-rock tunneling machine hard roe hard rolling hard rolling car hard rot hard roving hard rubber hard rubber article hard-rubber battery box hard rubber bead hard rubber box hard rubber scraps hard rubber sheet hard-rubber steering wheel hard rubber tire hard rule hard running track hards hard saturated fat hard sauce hardsaying hard scale hard science

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