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| 计算机的运转时间; 生产时间; 有效工作时间 | |||
| 有效工作时间; 有用时间; 有益时间 | |||
| 有效时间; 可用时间 | |||
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полезное время : 11 phrases in 4 subjects |
| Business | 2 |
| Electronics | 1 |
| General | 1 |
| Technology | 7 |
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