running rail

名词 n.
中文释义

英文释义

名词 n.
  1. One of the two rails of a railway track with which the wheels of a train make contact. plural-normally
    — In order to reduce noise to a minimum, the running rails have been welded into 315 ft. lengths.
  2. A fence which marks the inside edge of a racecourse track.

词形变化

running rails plural
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