source of additional revenue

基本解释

Depending on your market segment, brand, and especially your location, walk-in sales can represent a significant source of additional revenue.
取决于你所在酒店的市场定位和品牌，尤其是地理位置，上门客带来的销售将会占绝一个相当大的比例。
And until recently, Linden Lab could not add servers fast enough to meet the demand for additional virtual land, which must be bought for real dollars, an important source of revenue for the outfit.
然而，最近，林登实验室已经来不及添置足够的的服务器已来满足对于虚拟土地不断增长的需求。在SL中，这些虚拟土地是要用真实货币购买的，是获得装备收入的重要来源。

If Sina is able to capture even a small percentage of that market, it could be a significant source of additional revenue.
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Successful people will likely pay a large part of the price, as they are the largest potential source of additional government revenue.
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Selling branded toys and merchandise based on its very popular titles could open up an additional source of revenue, and help Zynga reduce its dependence on Facebook.
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