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柯林斯高阶英汉双解学习词典释义
英英词典释义
  • Noun
    1. a worker who thins out and trims trees and shrubs;
    "untouched by the pruner's axe"
    2. a machine that trims timber
    3. capacitor having variable capacitance; used for making fine adjustments
    4. joist that receives the end of a header in floor or roof framing in order to leave an opening for a staircase or chimney etc.