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51. | moderate thinning |
| 适度|疏伐 |
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52. | correct exposure |
| 适度曝光 |
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53. | broadly appropriate |
| 基本适度 |
|
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54. | conservative grazing |
| 适度放牧 |
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55. | opportune thinning |
| 适度间苗 |
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56. | comfort cooling |
| 适度冷却 |
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57. | optimal breast-feeding |
| 适度母乳喂养 |
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58. | theory of optimum population |
| 适度人口论 |
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59. | appropriate measure rate |
| 适度率 |
|
|
| |
60. | controlled aggregation |
| 适度絮凝 |
|
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