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1. The sodded check dam was a critical component in the flood control project.
土工膜是防洪工程的关键组成部分。
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2. The sodder check drainage ditch was designed to prevent soil erosion.
土工膜设计的排水沟是为了防止土壤侵蚀。
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3. The sodder check drainage ditch was used to divert water from the river.
土工膜被用来将河水引向其他地方。