I can’t say that tax rebates are unconditionally good things.
We're moving towards one approximation. It used to be more approximations, but now it's just one, and because it's just one it's not really an approximation anymore. It's unconditionally set. It's set as a rule.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.