round file

名词 n.
中文释义

英文释义

名词 n.
  1. A metal file with a circular or rounded shape, used for shaping round surfaces.
    — Use a round file to deburr the pipe.
  2. The trash; the wastebasket. humorous
    — My junk mail goes straight into the round file the moment it arrives.

词形变化

round files plural
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