Coal and natural gas are mainly used for electricity generation, whereas oil is used mostly to power transportation, yet the prices of all these energy sources are linked.

煤炭和天然气主要用于发电，而石油主要用于给运输提供能量，但所有这些能源的价格是相互关联的。

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There is real value in thinking differently about a site that mainly wants to deliver information and a site that mostly wants to generate interaction.

对主要用于发布信息的站点和主要用于创建交互的站点分别考虑，这是有实际价值的。

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It is found mainly in Latin America, where it is mostly transmitted to humans by the faeces of triatomine bugs, known as' kissing bugs', among other names, depending on the geographical area.

该病主要见于拉丁美洲，多数通过锥蝽臭虫的粪便传播给人类。这类臭虫亦称吸血猎蝽，并根据地理区域，还有其它名称。

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The Caribbean Mercy is smaller and has two operating theatres which deal mainly with eye surgery (mostly cataracts).

BBC: NEWS | Health | ''Floating hospitals' mercy missions'

And many FIX-enabled financial apps don't even use passwords for their sessions, mainly because the apps were originally mostly built for use internally for a private connection between business partners -- rather than over the Internet, which is increasingly becoming the preferred method.

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But whereas Hurricane Katrina's victims were mostly poor people, wildfires mainly affect the rich.

ECONOMIST: George Bush is not the only one clearing brush