免费服务和收费服务的区别：免费服务将会生成一个带有广告的封面。
Differences between the free and paid service: the free service will generate a cover-page that includes an AD.
为了省钱去占别人的便宜，比如给服务生的小费少到让人尴尬，或者为了得到一些免费的小礼品而不停的抱怨侍者的服务质量。 （为了能让你少抱怨一点，送你免费礼品？）
Taking advantage of others to save money, whether it's leaving an embarassing small tip or constantly arguing about the quality of a provider's service to try to get an item for free.
提供免费服务如同航空公司免费派送剩余的机票，以希望赚些餐饮、服务费。
Offering slots for free is akin to an airline giving away spare seats for nothing in the hope of making something from meals and fees.
应用推荐