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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 : 4 短语, 3 学科 |
| 数学 | 1 |
| 环境 | 2 |
| 装载设备 | 1 |