【上位】 an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water" 特定の目的のために発明された道具。
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drain consisting of a U-shaped section of drainpipe that holds liquid and so prevents a return flow of sewer gas 液体を貯めて、下水から発生するガスの逆流を防ぐ排水管のU字形の部分からなる排水。
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something (often something deceptively attractive) that catches you unawares; "the exam was full of trap questions"; "it was all a snare and delusion" あなたが無意識に捕らえられるような何か（しばしば一見魅力的に見える何か）。
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【上位】 an arrangement scheme; "the awkward design of the keyboard made operation difficult"; "it was an excellent design for living"; "a plan for seating guests" 配置の計画。
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