visor

n 1 moving part of a helmet, used to cover and protect the face （头盔的）面甲, 面罩: The motor-cyclist raised/lowered his visor. 那个骑摩托车的人把面甲往上托[向下拉]. 2 (a) projecting piece of plastic, stiffened cloth, etc worn above the eyes to shield them from the sun 遮阳帽舌. (b) similar object forming the projecting front part of a cap; peak 帽舌. =>illus 见插图.

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