无关紧要的

This is a matter of no account.

这是一件关紧事。

He often dissipated his energies in trivial matters.

他常关紧小事上浪费精力。

That’s something extrinsic to the subject.

是对本题关紧。

It is a mere trifle.

只是关紧事而已。

By becoming involved with tangential issues, it hopes to hide the real question and keep it out of mind.The ego's characteristic busyness with nonessentials is for precisely that purpose.

它之所以关紧问题上搅和，乃是希望借此避开真正问题，将它驱逐于心灵之外。