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41. | holding vacuum pump |
| 维持真空泵 |
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42. | sustaining member |
| 维持会员 |
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43. | cost of maintenance |
| 维持费 |
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44. | sustain a family |
| 维持家计 |
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45. | keep the pot Boiling |
| 维持生活 |
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46. | maintenance media |
| 维持液 |
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47. | maintain neutrality |
| 维持中立 |
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48. | maintain law and order |
| 维持法治 |
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49. | maintenance energy |
| 维持力 |
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50. | keep one's state |
| 维持尊严 |
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