Brent thill software analyst at Citigroup said the annual maintenance fees charged by mature software companies amounted to a really reliable high-margin part of the business that generates a lot of cash to support higher debt .

花旗集团（citigroup）软件业分析师 布伦特蒂尔（brent thill）表示，成熟软件公司每年收取的维护费实际上是“十分可靠的高利润率业务，能够产生大量现金，以支持（这些公司）提高负债水平”。

Accessible to thill of bee .

蜜蜂的 车把。

It seemed a thill of pleasure .

似乎都 激起 心头的欢乐。