in business

Adjective

idiomatic

Engaged in business activity / (idiomatic) Ready to proceed in a desired activity.

Japanese Meaning

事業活動に従事している / 望ましい活動を進める準備ができている

After years of planning, they finally opened their store and are now in business.

何年もの計画の末に、彼らはついに店を開き、現在は事業を営んでいる。

Sense（1）

Engaged in business activity

Sense（2）

(idiomatic) Ready to proceed in a desired activity.

I finally got the vents back from the chrome shop. / Now you're in business!