The most important problem of city flood-control planning is to choose reasonable flood-control standard.

城市防洪规划的首要问题，就是选择合理的防洪标准。

youdao

The most important problem of city flood-control planning is to choose reasonable flood-control standard.

城市防洪规划的首要问题，就是选择合理的防洪标准。

youdao