Services that clients use in business transactions, in which the quality of service plays a high role of importance and the service is probably not offered free-of-charge.

客户在商业交易中所使用的服务。在这种服务中，服务质量起到了非常重要的作用，而该服务很可能不是免费提供的。

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Many theories have been formulated to explain the role of grazers such as zooplankton in controlling the excluded grazers from regions of high phytoplankton concentration.

人们提出了许多理论来解释食草动物，如浮游动物，在控制浮游植物高度集中地区的食草动物方面所起的作用。

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The currency likely plays a role alongside high saving rates.

货币可能在高储蓄率中扮演重要角色。

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to her latest role as high stake litigator Patty Hewes in the FX television series "Damages."

VOA: standard.2010.05.18

They object to the cost of the proposal, which could go as high as $one-trillion over 10 years, and they want to stop what they see as an expanding role for government in administering health care.

VOA: standard.2009.07.31

After the 2001 election, he was moved to a less high profile role in the Cabinet Office, but retained the position of Deputy Prime Minister.

BBC: John Prescott

U.S. military forces have been playing a high-profile and high appreciated role in helping with disaster relief, including aiding in searching for and identifying the dead.

FORBES: Elections, Nuclear Energy, and the U.S. Security Alliance

Farrow has also taken on a high-profile role as an advocate of children's rights.

BBC: Profile: Mia Farrow