touching
used to introduce a topic or to provide further information about a particular subject

について, に関して

[前置詞]
as to
used to introduce a topic or issue and provide information about it or clarify it

について, に関して

[前置詞]

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used to introduce a topic or to provide further information about a particular subject
について, に関して
used to introduce a topic or issue and provide information about it or clarify it
について, に関して