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21. | It is horrible to lose opportunity than to lose time, and to lose dream and confidence. |
| 、 比时间流失更可怕的是机会的流失,比机会流失更可怕的是梦想和信心的流失。 |
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22. | soil loss estimation |
| 土壤流失估算 |
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23. | soil loss prediction |
| 土壤流失预报 |
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24. | export-import cover ratio |
| 出进口比率;进出口比率 |
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25. | Prevent foreign exchange flight |
| 制止外汇流失 |
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26. | soil loss equation |
| 土壤流失方程 |
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27. | loss-of-coolant accident |
| 冷却剂流失事故 |
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28. | ratio of two ratio estimators |
| 两个比率估计量的比率 |
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29. | loss of soil nutrient |
| 土壤养分流失 |
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30. | variable ratio schedule |
| 可变比率程序 可变比率程序 |
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