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。
Most people think of iTunes as a paid service, but Spotify's Ek pointed out that it should really be considered a freemium app.大多数人认为iTunes是一个收费服务，不过Spotify的EK指出其实这更应该被看做是一种免费增值应用。
The good news is that hiring is up; the bad news is that it's restaurants, providers of ill-paid service sector jobs, not Silicon Valley tech firms, that are doing the hiring.最近的好消息是雇工数量有所增加，坏消息是增加雇工的地方是餐厅———只能提供低工资的服务行业，而不是硅谷高科技公司。
