Now that I'm leaving business school and committing myself to the company,既然我现在办了休学，全身心投入公司事务中

now that既然；由于，因为

Now that I am free, I can enjoy music for a while.

既然有空，我可以享受一下音乐。

Now that she has apologized, I am content.

既然她已经道了歉，我也就满意了

commit to把 ... 托付给； 把 ... 置于

He was committed to the care of an aunt.

他被托付给给一个婕妈照顾。

He didn't commit himself to anything.

他没有作任何承诺。

Mom's agreed to sign off on it,妈妈已经同意了

sign off on赞同

We need a few more people to sign off on this proposal.

我们需要更多一些人在这个提议上签字。

The President hasn't signed off on this report.

这份报告总统没有批准。

but obviously, I need you to as well.但显然，还需要你首肯

as well也；又

He is a friend in word as well as in deed.

他是个言行如一的朋友。

he wants to follow in his old man's footsteps on the condition that I reactivate his trust.他想追随他父亲的脚步条件是我重新解冻他的信托基金

on the condition that在 ... 条件下

He was granted his freedom on the condition that he leave the country.

他已获准恢复自由，条件是他离开这个国家。