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.
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。
2
This is related to flood-control tests.
这与防洪控制测试也是相关的。
3
Hydroelectric power and floodcontrol and irrigation are possible without building monster dams.