aq·ue·duct /ˈækwəˌdʌkt/
 水道,水渠,脈管
 aq·ue·duct /ˈækwəˌdəkt/ 名詞
 水管,導水管,渡槽
 Aq·ue·duct n.
 1. A conductor, conduit, or artificial channel for conveying water, especially one for supplying large cities with water.
 Note: ☞ The term is also applied to a structure (similar to the ancient aqueducts), for conveying a canal over a river or hollow; more properly called an aqueduct bridge.
 2. Anat. A canal or passage; as, the aqueduct of Sylvius, a channel connecting the third and fourth ventricles of the brain.
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 aqueduct
      n : a conduit that resembles a bridge but carries water over a
          valley