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  1. Oxford American Dictionary

    lap

    • IPA[lap]

    美式

    • n.
      one circuit of a track or racetrack；a stage in a swim consisting of two lengths (or one length) of a pool
    • v.
      overtake (a competitor in a race) to become one or more laps ahead；(of a competitor or vehicle in a race) complete a lap, especially in a specified time

    • verb: lap, 3rd person present: laps, gerund or present participle: lapping, past tense: lapped, past participle: lapped

    • noun: lap, plural noun: laps

    • 釋義

    名詞

    • 1. one circuit of a track or racetrack heavy rain stopped the race after 18 laps a lap record
    • ▪ a stage in a swim consisting of two lengths (or one length) of a pool everyone did ten laps of the pool
    • ▪ a part or section of a journey or other undertaking we caught a cab for the last lap of our journey
    • 2. an overlapping or projecting part cut to the depth and width of the lap
    • ▪ the amount by which one thing overlaps or covers a part of another they have sufficient lap to act compositely
    • ▪ a defect formed in rolling when a projecting part is accidentally folded over and pressed against the surface of the metal.
    • 3. a single turn of rope, thread, or cable around a drum or reel.
    • ▪ a layer or sheet, typically wound on a roller, into which cotton or wool is formed during its manufacture.
    • 4. (in a lapping machine) a rotating disk with a coating of fine abrasive for polishing.
    • ▪ a polishing tool of a special shape, coated or impregnated with an abrasive.

    動詞

    • 1. overtake (a competitor in a race) to become one or more laps ahead she lapped all of her rivals in the 3,000 meters 同義詞 overtake, overhaul, outstrip, outdistance, leave behind, ... 更多
    • ▪ (of a competitor or vehicle in a race) complete a lap, especially in a specified time he lapped two tenths of a second faster than anyone else
    • 2. literary enfold or swathe a person or thing, especially a part of the body, in (something soft) he was lapped in blankets I was accustomed to being lapped in luxury 同義詞 wrap, swathe, cover, envelop, enfold, ... 更多
    • 3. project beyond or overlap something the water lapped over the edges
    • 4. polish (a gem or a metal or glass surface) with a lapping machine the honing and lapping of ring gauges