YOU SAID:

We've been working on this since we're eighteen

INTO JAPANESE

私たちは18をしているので、我々はこれに取り組んできました

BACK INTO ENGLISH

Since we have a 18, we've been working on this

INTO JAPANESE

私たちは18を持っているので、我々はこれに取り組んできました

BACK INTO ENGLISH

Since we have 18, we have been working on this

INTO JAPANESE

私たちは18を持っているので、我々はこれに取り組んできました

BACK INTO ENGLISH

Since we have 18, we have been working on this