中国河流地域众多，情况复杂多变，古人因地制宜、就地取材、方能巧夺天工。

中国河流地域众多，情况复杂多变，古人因地制宜、就地取材、方能巧夺天工。

A.China has a multiplicity of complicated rivers and landforms, and the ancients took local conditions into account and used local resources to ensure a perfect addition to Nature.

B.China has a multiplicity of complicated rivers and landforms, and the ancients take effective measures according to local conditions and used local resources to ensure the superb craftsmanship excelling nature.

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