rack back

基本解释

They then proceeded to earn their way back to solvency and are now (mostly) racking up healthy profits.
然后，他们开始赚回了偿付能力，现在（主要）正获得可观的利润。
Once you've retired your credit card debt, switch back to the original schedule so you'll avoid racking up additional years of interest charges.
一旦还清所有信用卡欠款，回到原来的计划上来(换学生贷款)，这样就避免多付几年的利息了。
I'm having my surgery tomorrow, and while it's always a little nerve-racking to go under the knife, I'm excited to take the first step towards getting healthy and getting back on the court.
明天我就要进行手术了，很显然，动刀总是伤脑筋的事。当然我同时也感到兴奋，因为这是我恢复健康并重返球场的第一步。
blog.sina.com.cn

While things may not have worked out the way it was envisioned back in 2001, one can certainly appreciate a philosophy suggesting that a government that is racking up large, annual surpluses might be indicative of a population that is being taxed too highly.
FORBES: Does Anyone Still Remember Why We Have The Bush Tax Cuts?