英语翻译
问题描述：
英语翻译
Sponsorship is a uniquely American invention brought forth from the need of advertisers to reach certain markets and the need of event organizers to identify additional funding to offset costs not costs not cvered by normal revenue streams,such as ticket sales.
能知道大致意思,但是翻译出来总是不是很流畅,
答
赞助是美国人发明的一种独特事物,目的在于满足广告商争取特定市场的需要,或者是帮助活动组织者争取额外经费,以支付售票等通常收入来源无法弥补的成本.
（注：offset costs not costs not cvered by normal revenue streams这部分似乎有些问题,请确认一下有没有抄错.不过基本意思应该就是如上所示）