A "side hustle" is an additional income source that is separate from your paycheck.

“副业”是你薪水之外的额外收入来源。

youdao

That may cut into your discretionary spending, so you may need some sort of side hustle but it WILL be worth it.

这样做可能会减少你的可支配开支，因此你可能需要一点侧推力，不过这真的非常值得！

youdao

From here, retrace your steps back down the steep side-streets to the hustle and bustle of downtown, also known as Jabal Amman.

BBC: Secret Amman

So pension consultants realized they could offer to advise pensions for low or no fee if they could hustle brokerage and other compensation on the side.

FORBES: International Campaign to Eliminate Pension Consultant Abuses (November 2, 2004 )