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  1. main beam

    • n.
      a principal beam which transmits a load directly to a column.;the brightest setting of a vehicle's headlights; full beam
    • noun: main beam, plural noun: main beams

    • 釋義

    名詞

    • 1. a principal beam which transmits a load directly to a column.
    • 2. British the brightest setting of a vehicle's headlights; full beam headlights were good, particularly on main beam