It's a matter of focus.
本句是常用口語. It's a matter of …這個句型經常被用于一些固定表達中,例如:It's a matter of opinion.(蘿卜白菜,各有所愛).It's a matter of time.(這是遲早的事).
The point is, it takes many adjusements to bring the subject into focus.
The point is…在寫作中是一個常用的句型.可以用來引出段落或全文的中心觀點句,常用在論說文中.該表達能引起讀者的特別注意.