source of additional revenue

基本解釋

Depending on your market segment, brand, and especially your location, walk-in sales can represent a significant source of additional revenue.
取決于你所在酒店的市場定位和品牌，尤其是地理位置，上門客帶來的銷售將會占絕一個相當大的比例。
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，林登實驗室已經(jīng)來不及添置足夠的的服務器已來滿足對于虛擬土地不斷增長的需求。在SL中，這些虛擬土地是要用真實貨幣購買的，是獲得裝備收入的重要來源。

If Sina is able to capture even a small percentage of that market, it could be a significant source of additional revenue.
FORBES: Sina Eyes Social E-commerce Integration as Market Blossoms
Successful people will likely pay a large part of the price, as they are the largest potential source of additional government revenue.
FORBES: Guess What: The Government Built Your Company!
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.
FORBES: Zynga Hooks Up With Hasbro To Make Money In Toys