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| 61. | =====中国的古人根据太阳在两个冬至日之间的运行情况划定出一年；根据月亮圆而后缺，再由缺复圆的时间划分出12个月。 |
| The ancient Chinese started their calendar year in winter. Using the cycle of the moon, its waxing and waning, they devised the12 months-moons--of the year. |
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| 62. | We tried to make the plane take off on time, but we couldn’t compete against the weather. |
| 我们曾力图使飞机正点起飞，但终究还是敌不过天气。 |
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| 63. | Advisory Committee for Operational Hydrology |
| 运行水文学咨询委员会（运行水文咨委会） |
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| 64. | economical operation |
| 经济操作运行;经济操作运行 |
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| 65. | operational site |
| 运行场所;运行位置;工作场所 |
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| 66. | trouble-free operation |
| 无干扰运行;连续工作;顺利运行 |
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| 67. | economic operation model |
| 经济运行模式;经济运行模式 |
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| 68. | B: It runs every hour on the hour. So the next train leaves in 15 minutes. |
| 乙：每小时正点就有一班车，下一班车再等十五分钟就开。 |
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| 69. | efficiency of economic operations |
| 经济运行效率;经济运行效率 |
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| 70. | 3、 屏蔽层在零序工作状态下的电抗值低，有利于新型短路自动保护设备的应用，有利于电缆及其相关设备的安全运行。 |
| The reactance of the shield in the zero sequence state is low, which is helpful for the application of new type automatic protecting equipment with short circuit, and the safe running of the cable and other relative equipment. |
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