| 单词 | back-up |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔HELP〕This department needs more secretarial and clerical back-up. 这个部门需要有更多的秘书和文书人员作支援。朗文写作活用〔backup〕Alternative treatments can provide a useful back-up to conventional treatment.替代疗法能为传统的治疗提供有效的辅助。柯林斯高阶〔backup〕Computer users should make regular back-up copies of their work.计算机使用者应该定期对自己的工作进行备份。柯林斯高阶〔backup〕There is no emergency back-up immediately available.手头无法获得应急支持。柯林斯高阶〔copy〕Keep back-up copies of all your Word files.把你所有的Word 文档都备份一下。麦克米伦高阶〔minus〕On the minus side , there is no free back-up service if things go wrong.不足之处是出了问题没有免费的技术支持服务。朗文当代〔off-site〕The company sends back-up tapes to an off-site storehouse.公司将备份带送往厂区外的一家仓库。外研社新世纪 |
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