At the bottom, it is a matter of trust.

根本上，这是一个信任的问题。

It is a matter of decency to say please and thank you.

说“请”和“谢谢”是礼貌的问题。

It is a matter of great account.

这是一件重要的事情。

It is a matter of especial importance.

这是件特别重要的事。

It is a matter of especial importance .

这是件特别重要的事。

It is a matter of life and death to me.

那对我是生死交关的问题.

It is a matter of preference, actually.

实际上，这是一个个人喜好问题。

It is a matter of attitude and confidence.

关键在于态度和信心。

It is a matter of the Goldilocks phenomenon.

全球暖化的问题与[最适现象]有关.

It is a matter of working out what makes sense.

先明确什么东西是有意义的很重要。