无关紧要的

This is a matter of no account.

这一件紧要的事。

He often dissipated his energies in trivial matters.

他常在紧要的小事上浪费精力。

That’s something extrinsic to the subject.

那对本题紧要的。

It is a mere trifle.

那只紧要的事而已。

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.

所以老在紧要的问题上搅和，乃希望借此避开真正的问题，将驱逐于心灵外。