none but

1. 只; 仅

She chose none but the best.

她只挑最好的。

none other than

1. 不是别人而正是

The new arrival is none other than the President.

刚来的不是别人正是总统。

none the less

1. 仍然

For all his years, he was none the less active and energetic.

他虽年事已高, 但仍生气勃勃, 精力旺盛。