explanatory

US /ɪkˈsplæn.ə.tɔːr.i/
UK /ɪkˈsplæn.ə.tɔːr.i/
1.

đề giảng giải

serving to explain something.

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explanatory notes
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explainingdescriptivedescribingillustrativeevaluativeinterpretiveexpositoryrevelatoryprefatoryhermeneutic