copper-bottomed 英音 [ ˌkɒpə ˈbɒtəmd ] 美音 [ ˌkɑːpər ˈbɑːtəmd ] 释义 adj. 底包铜皮的；耐航海的；绝对安全的 例句 1·Not entirely surprisingly, education secretary Michael Gove casts all this as a matter of copper -bottomed common sense. 教育大臣Michael Gove对此完全不吃惊，他希望将此融入大众的常识中去。