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| 51. | general survey of soil and land planning |
| 土壤普查和土壤规划 |
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| 52. | Ireland has suffered a huge brain drain in recent years. |
| 近年来，爱尔兰人才大量流失。 |
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| 53. | runoff from feedlots |
| 从施用场所的流失 |
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| 54. | The threat of erosion also is reduced because no water flows on the surface and because tomatoes are given only the amount of water they need. |
| 因为灌溉水不流经地表，又因灌水量与番茄的需水量相符，所以土壤流失的危险随之减少。 |
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| 55. | uncompensated drainage |
| 无赔偿的石油流失 |
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| 56. | Asociacion Internacional de la Ciencia del Suelo |
| 国际土壤协会（土壤协会） |
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| 57. | Great loss of state revenue |
| 国家税源的大量流失 |
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| 58. | Concerned farmers are building terraces on hilly fields, rotating their crops, and using new plowing methods to cut soil losses significantly. |
| 关注事态的农民们在山地上修造梯田，实行轮作，并采用新法耕作以大幅度减少土壤流失。 |
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| 59. | Erosion has dissolved acres of topsoil. |
| 侵蚀作用已使大量表土层流失。 |
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| 60. | This text various phenomenons that area library books run off, analyze the reason that books and periodicals run off, put forward the measure of cowgirl that area County library keep books from running off. |
| 本文就区图书馆图书流失的多种现象，分析了书刊流失的原因，提出了区县图书馆防止图书流失的相应措施。 |
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