Airlines consider business travellers a captive market.

航空公司把商务旅行者视为垄断性市场。

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Many rail firms enjoy a virtually captive market: trains are very good at moving commuters into and out of large cities; congestion on the roads means that many people have no real alternative.

很多铁路企业占据着垄断市场：乘火车进出一些大的城市方便快捷；而且公路上的拥堵也让人别无选择。

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With users spending upwards of 2 to 3 hours daily on social networking sites, it's a great way to market to a captive audience without spending an excessive amount on marketing initiatives.

用户每天花费2到3个小时在游戏社交网站上，这样就不用做太多的营销活动就能俘获大量的用户。

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Whether living in a Cheung Kong apartment, switching on a Fortress appliance powered by Hong Kong Electric, buying groceries at Park 'N Shop or toiletries at Watson's, listening to Metro Radio, or, soon, connecting via a PCCW-HKT line, people in the Special Administrative Region are a captive market.

CNN: From Ports to Portals

Despite a decent knowledge base, established brands and a captive domestic market for consumer electronics, the big five have failed to bear the pain of a global downturn in the market for chips.

ECONOMIST: Japanese business

By expanding the fulfillment business to third party sellers on Amazon.com, it is tapping into a natural and captive market.

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