双语例句
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Conservational tillage decreased wind erosion rate on farmland.
保护性耕作减少农田土壤风蚀速率。
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Through a detailed engineering design, introduced some methods of repairing and reconstruction firs_ class conservational building.
通过具体的工程实例，较详细地阐述了一类保护建筑维修加固改造时的一些方法。