to be an authority on

listen to the pronunciation of to be an authority on
Englisch - Englisch
be skilled in something, be proficient in a certain area, be knowledgeable in something
an authority on
an expert on, one versed in
to be an authority on

    Silbentrennung

    to be an au·tho·ri·ty on

    Türkische aussprache

    tı bi ın ıthôrıti ôn

    Aussprache

    /tə bē ən əˈᴛʜôrətē ˈôn/ /tə biː ən əˈθɔːrətiː ˈɔːn/
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