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31. | holding vacuum pump |
| 维持真空泵 |
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32. | sustaining member |
| 维持会员 |
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33. | cost of maintenance |
| 维持费 |
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34. | sustain a family |
| 维持家计 |
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35. | keep the pot Boiling |
| 维持生活 |
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36. | maintenance media |
| 维持液 |
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37. | maintain neutrality |
| 维持中立 |
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38. | maintain law and order |
| 维持法治 |
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39. | maintenance energy |
| 维持力 |
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40. | keep one's state |
| 维持尊严 |
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