新的法律立即通过，达到了同样的结果，使土壤留下来和提供防洪措施，但这是基于土壤保护的原则。
New laws were passed immediately that achieved the same result of resting soil and providing flood-control measures, but which were based on the principle of soil conservation.
对满足同一防洪标准的各种防洪措施，也可用年费用最小的原则优选。
Flood protection measures under the same flood prevention criteria may be optimistically selected by the criteria of minimum yearly cost.
对满足同一防洪标准的各种防洪措施，也可用年费用最小的原则优选。
Flood protection measures under the same flood prevention criteria may be optimistically selected by the criteria of minimum yearly cost.
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