| 摘要 |
A toothbrush includes a brush head formed with a plurality of cavities, and an assembly of bristle holders received in the cavities, the bristle holders being fixed to and interconnected together by spring elements engageable with the bottoms of the cavities and normally urging the bristle holders to a projected position outwardly of the brush head, but permitting the bristle holders to be displaced inwardly to a retracted position within their respective cavities.
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