单词	couldn't
释义	couldn't contraction ˈku̇-dᵊnt  -dᵊn,  dialectal also  ˈku̇-tᵊn(t),  or  ˈku̇nt : could not Word History First Known Use 1646, in the meaning defined above Kids Definition couldn't ˈku̇d-ᵊnt  : could not
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英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。