At some point the debt will be called in, and all those service—the things which the planet does for us for free—will grind to a halt.

在某一时刻，债务将被收回，所有这些服务——地球免费为我们做的那些事情——将慢慢终止。

youdao

Maybe you could offer 10% off their next subscription, or a free trial to your service for 30 days.

你可以为他们下次的订阅提供10%的折扣，或者是免费试用你的服务30天。

youdao

Peapod, for example, offers free shipping for the first two months you use the service.

例如，皮波德公司为新加入的顾客提供两个月的免费送货服务。

youdao

Question Box is a service that provides answers free of charge for people who cannot search the Internet directly.

VOA: special.2009.10.12

The point is that they have received what they have through the free exchange of people who have given them their holdings, usually in exchange for providing some other service Good enough.

关键是，他们赚到的这些钱,都是通过与人自由交换得来的,那些人也得到了报酬，通常是以提供其他服务作为交换的,很不错。

耶鲁公开课 - 公正课程节选

Yearning for a contract-free option for cellular service?

ENGADGET

The clinic is run on a voluntary basis and charges Western clients a fee for consultation and medicine, in order to provide a free service for the Nepalis.

BBC: NEWS | Health | The highest hospital in the world

As I noted in a recent post, the social gifting service works like this: On the Wrapp site, you can sign up for the service for free using your Facebook account.

FORBES: Wrapp: Gift Card Startup Gets $5M From Greylock