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This paper discusses the design methods of high-grade highway in water source protection area.
论述了水源保护区高等级公路的设计方法。
youdao
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The protective measure was put forward for the water source area.
提出了该水源保护措施。
youdao
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The protective measure was put forward for the water source area.
提出了该水源保护措施。
youdao