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| 11. | We must conserve our soil and water resourses to assure that these key natural elements are available to support productivity. |
| 我们必须保护水、土资源，以便确保关键的自然元素能有效地维持生产。 |
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| 12. | Young people had to learn to renew and preserve nature's resources, so that they might live on the land for generations. |
| 年轻人不得不学习更新和保护自然资源，以便在这块土地上世代生活下去。 |
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| 13. | 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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| 14. | receive protection |
| 接受保护，受到保护 |
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| 15. | Garrisons established to protect colonies acquired in the Spanish American War and kindred annexations. |
| 建立起卫戍部队以便保护在美西战争中占领的殖民地和兼并的西班牙领地。 |
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| 16. | in order to |
| 以便,为了 |
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| 17. | Oxygen containers are equipped with pressure-relief devices to protect from over pressurization and possible rupture. |
| 氧容器装备有减压装置，以便在过压和可能的破裂时保护容器。 |
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| 18. | afford protection |
| 给予保护，提供保护 |
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| 19. | Nitrogen containers are equipped with pressure relief devices to protect from over pressurization. |
| 氮容器装备有减压装置，以便在过压和可能的破裂时保护容器。 |
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| 20. | conservation of landscape |
| 保护风景; 保护景观 |
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