Offering low marginal cost items for free is a shortcut to generating word of mouth, which is a lot cheaper than buying ads.

免费提供边际成本较低的产品或服务是建立良好口碑的捷径，比你花钱做广告可便宜多了。

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Now, purchases that combine classical or opera CDs with expensive goods receive a higher score than purchases of high-cost items alone.

目前，在购买高档品物品时同时购买古典音乐或歌剧的CD的交易会得到比单独购买高档物品更高的风险分值。

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If necessary, consult Erik Keller's table of frequently underestimated cost items ( "Exorcising The Ghosts Of Legacy Software, " July 2006).

如果有必要，参考一下Erik Keller的常被低估的开销项目列表（《为留软件妖除魔》，2006年7月）。

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Local officials are urging people to donate money, rather than more items, to help defray the cost of relief efforts.

VOA: standard.2010.01.18

CDs with expensive goods receive a higher score than purchases of high-cost items alone.

ECONOMIST: Computing

The reforms will also move funding and patients toward primary care physicians instead of high-cost specialists and toward community care instead of expensive institutions, through technical supports, grants and financing for high-cost items such as health information technology.

FORBES: New York Medicaid Reforms Intended to Improve Health at Lower Cost

While aboard a ship, many amenities are all-inclusive, but the cost of items purchased off the ship will likely be exorbitant.

FORBES: An Arctic River Cruise Should Be Your Next Adventure