1)a matter of,几(分钟，里路，块钱等)的事;大约，左右;是个…问题，事关…2)a matter of,(关于...)的问题;大约3)Several questions are involved here.,这里有几个问题。4)Some Problems on Tree,关于树的几个问题5)Classification of Correspondence and documents on Staff Matters,《有关人事问题的通信与文件的分类》6)These are questions of the day.,这些是时事问题。