Nguyên nhân gây sâu răng? | #aumsum (What causes cavities? | #aumsum)

US /səbˈskraɪb/

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UK /səb'skraɪb/

US /ɪˈvɛntʃuəli/

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UK /ɪˈventʃuəli/

US /bækˈtɪriə/

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UK /bæk'tɪərɪə/

US /prɪˈvɛnt/

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UK /prɪ'vent/