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| 英语 词库 | |||
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| Specialized system software used to perform particular computerized functions and routines that are frequently required during normal processing (Examples of utility programs include sorting, backing up and erasing data) | |||
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utility : 5 短语, 3 学科 |
| 微软 | 1 |
| 环境 | 3 |
| 经济 | 1 |