a matter of [ə ˈmætə ɔv]

以下由轻松背单词网站提供

（关于...）的问题；大约

I need to talk to you about a matter of some delicacy.我需要和你谈个有点棘手的问题。
Learning languages isn't just a matter of remembering words.学习语言不仅仅是记些单词的事。