- 问题详情:AjointresearchprojectbyresearchersfromseveralBritishuniversitiesandinstituteshasattractedpeople’sattentiontothetoothbrushagain.Researchershavefoundthatyourtoothbrushishometomorethan100millionbacteria.Buttherearehundredsofmicroorganismsinthem...
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