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| 41. | the arid deserts of Africa |
| 非洲的乾旱沙漠 |
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| 42. | constant drying condition |
| 恒干燥,恒干燥条件 |
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| 43. | staring tracts of arid road, |
| 一段段干旱的大路， |
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| 44. | properly planned, can make an important contribution to the general welfare of the peoples living in arid |
| 无论是荒山造林还是更新造林，抑或只是保护和改良天然树林，只要好好计划，林业对于造福干燥、半干燥地带的人民都能作出巨大贡献。 |
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| 45. | International Arid Zone Research Programme |
| 国际干旱地区研究方案 |
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| 46. | Integrated Project on Arid Lands |
| 旱地综合项目 |
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| 47. | Central Arid Zones Research Institute |
| 中央旱区研究所 |
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| 48. | Water vapor in the lower atmosphere can vary in amount from a mere trace in arid regions to about 4% |
| 大气低层的水汽量在干燥地区（量）甚微，而在潮湿地区按体积占4%左右。 |
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| 49. | y from subhumid to arid |
| 在半湿润至干旱范围内的变化 |
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| 50. | unheated air drying |
| 未加热空气干燥;非热风干燥 |
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