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| 91. | filler retention |
| 填料保持 |
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| 92. | observe a silence |
| 保持静默 |
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| 93. | hold acknowledge |
| 保持应答 |
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| 94. | retention of nationality |
| 保持国籍 |
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| 95. | be kept upright |
| 保持正直 |
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| 96. | maintenance of fertility |
| 肥力保持 |
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| 97. | maintenance of accuracy |
| 保持精确度 |
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| 98. | sealing current |
| 保持电流 |
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| 99. | maintenance of airworthiness |
| 保持适航性 |
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| 100. | retaining device |
| 保持装置 |
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