| 单词 | perform maintenance |
| 释义 | perform maintenance The astronauts must perform maintenance work on instruments that were never designed to be repaired in space. Times, Sunday Times They shut down or reduce power only to perform maintenance or repair. Retrieved from Wikipedia CC BY-SA 3.0 A hotel in the community was used by company employees who traveled to the site to perform maintenance and other tasks. Retrieved from Wikipedia CC BY-SA 3.0 In 1992, the clock was stopped for the first time in more than a century to perform maintenance and repairs. Retrieved from Wikipedia CC BY-SA 3.0 Eligibility for the mechanic tests depends on the applicant's ability to document their knowledge of required subject matter and ability to perform maintenance tasks. Retrieved from Wikipedia CC BY-SA 3.0 |
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