运用我们的PPC技术，设定新的目标，寻找新的收入来源，以获得最大的营销回报。
Create new goals, find new revenue streams with proven PPC techniques designed for maximizing returns.
一个更激进的解决方案是在航站楼内寻找新的商业收入来源，而在过去十年左右的时间里，许多机场都在这一方面进行了探索。
A more radical solution is to find new sources of commercial revenue within the terminal, and this has been explored by many airports over the last decade or so.
“它们需要相对较长的时间来寻找获得稳定收入的新的来源，”他补充说。
"It would take them a relatively long time to find a new source of sustainable revenue," he added.
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