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1. The projecting conduit was designed to direct water from the reservoir to the irrigation system.
这个投射导管的设计是为了将水从水库引导到灌溉系统。
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2. The engineer carefully inspected the projecting conduit for any signs of wear or damage.
工程师仔细检查了投射导管，以查看是否有磨损或损坏的迹象。
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3. The projecting conduit was used to carry heavy loads and prevent them from crushing the ground.
投射导管被用来承载重物，防止它们压碎地面。