英语词汇“老大难”的读音、翻译、释义、用法及例句-英译汉、汉译英、英汉互译翻译词典-学识教育网

词汇	老大难
类别	英译汉、汉译英、英汉互译翻译词典
释义	老大难lǎodànán[knotty be hard nut to crack be long-standing,big and difficult problem] 形容问题很多,积重难返,不易改进的情况老大难的技术问题
随便看	naphtha sludge naphtha soap naphthathiourea naphtha vitrioli naphthazarine naphthazin naphthazine naphthazole naphthenate naphthenates naphthene naphthene base naphthene-base crude (petroleum) naphthene base oil naphthene soaps naphthenic acid naphthenic base naphthenic-base crude naphthenic (base) crude (oil) naphthenic crude naphthenic hydrocarbon naphthenic lube oil naphthenic oil naphthenic residual oil naphthenic soap

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