Remember that when the carrier arrives, you must be able to pay the charges with cash or a certified cheque.

记住，当运输车辆到达时，你必须能够用现金或保付支票支付费用。

《柯林斯英汉双解大词典》

Though its courses are free, itbagged its first $1m in revenues last year after introducing theoption to pay a fee of between $30 and $100 to have course results certified.

课程本身为免费，但由于实行付费30到100美元可获结业评估证书机制后，Couresa去年的总收入为100万美元，这是它的第一笔收入。

youdao

In addition to the software, customers pay dearly for hardware, and for the army of Epic-certified technicians that needs to be deployed to get the system up and running.

FORBES: Epic Systems' Tough Billionaire

So if they're getting this good information from OPOWER and they see that, boy, that drafty window is costing me a couple of hundred bucks a year, they're now going to have an incentive to go to Home Depots or go to Lowes to hire a certified contractor and make the changes that will ultimately pay for themselves, improve our environment, and improve our economy.

WHITEHOUSE: Creating New Jobs in a Clean Energy Economy

Tests by the Home Depot, America's biggest purveyor of FSC-stamped products, suggest that barely a third of customers would pay a premium of 2% for a certified product, not enough to green even Western retailers.

ECONOMIST: Western consciences can do only so much to conserve forests