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| 81. | She improved her leisure by learning foreign languages. |
| 她利用闲暇时间学习外语。 |
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| 82. | forma stable and compact layer by the treatment of chemical conversion, its corrosion resistancewas improved |
| 出土铁器文物在脱盐清洗后，运用化学稳定转化处理的方法将表面不稳定的铁锈转化成稳定、致密的锈层，然后进行钝化封闭，提高耐蚀性，最后进行防锈封护和表面消光处理。 |
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| 83. | Starting from the 2001-02 school year, the teacher:pupil ratio in kindergartens will be improved by three |
| 由二零零一至零二学年开始，政府会分三个阶段改善幼稚园的师生比例，把幼儿班和幼稚园班级的师生比例分别由1:20和1:30改为1:15。 |
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| 84. | The screwdown block is improved by mechanics analysis with boundary element method, and a simple device |
| 通过采用边界元法对高线轧机压下垫块改造模型进行力学分析,开发设计一种适合测量高线轧机油膜轴承动态载荷特性的简易装置。 |
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| 85. | regulation for the use of firing enegy, the internal ballistic performance of caseless cartridge can be improved |
| 根据这一点火能量利用分配规则，调整可燃底火或辅助点火药的药量，可以改善内弹道性能。 |
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| 86. | He improved his english by practicing every day. |
| 他是通过每天练习的方法来提高他的英语水平的。 |
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| 87. | Conclusion The facial appearance is improved by the above operations in cases who have worn artificial |
| 结论 通过上述手术可使长期配戴义眼患者的外观改善 ,特别是Medpor眼睑插片用于治疗下睑松弛无力临床疗效满意 |
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| 88. | The consumption structure was improved step by step. Housing and traveling costs increased rapidly. |
| 消费结构逐步升级“ |
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| 89. | and augment net production by improved processing methods. |
| 农场主能够增加作物和牲畜的单位产量，减少病虫害和食品腐坏造成的损失，通过改进加工方法增加净产量。 |
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| 90. | multifarious effects on arcjet thruster operation, and both specific impulse and thrust efficiency can be improved |
| 研究表明，集气腔总压对推力器工作过程具有多方面的影响，在保证电弧稳定的情况下，适当提高集气腔总压可同时提高比冲和推进效率。 |
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