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51. | In the past thousand years, pain or happy, they had undergone decline and prosperous. |
| 他们从远古时期到现代文明社会,一直依靠驯鹿经济维持生活和求得发展。 |
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52. | maintenance of original nature |
| 原生维持 |
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53. | maintenance price |
| 维持价格 |
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54. | To make(a supply)last by practicing strict economy. |
| 竭力维持十分节俭以使供应能维持 |
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55. | peace-keeping forces |
| 维持和平部队 |
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56. | carrying cost |
| 维持成本 |
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57. | To keep up appearances |
| 维持体面 |
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58. | To cause to remain or last;retain. |
| 使继续使…维持原状或持续;维持 |
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59. | maintain market |
| 维持市场 |
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60. | maintain the Balance between revenue and expenditure |
| 维持财务收支平衡 |
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