Jiujiang City taxi advertising will be the most mainstream of media platforms.

出租车广告将成为九江市最主流的传媒平台之一。

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Sina blog channel is the most mainstream of all the Chinese, the most popular blog channel.

新浪网博客频道是全中国最主流，最具人气的博客频道。

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What they are certainly not finding, however, is any change in attitude of mainstream scientists: most still totally reject the very idea of telepathy.

然而，他们肯定没有发现主流科学家的态度有任何改变：大多数人仍然完全拒绝心灵感应的想法。

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and The New York Times called Brad "the most important act in mainstream Country music."

VOA: standard.2009.09.03

Kobo's calling the Mini "the world's smallest and lightest e-reader" -- a bit of a dubious claim (given the existence of the Txtr Beagle, for one), but it can certainly lay claim to being one of the most compact mainstream devices in the space at 4 x 5.2 x 0.4 inches, compared to 6.4 x 4.5 x 0.39 inches for the Kobo Glo.

ENGADGET: Kobo Mini review: does the world need a smaller e-reader?

Today, its digital operations, including washingtonpost.com, mobile platforms and an expanded digital-video unit, are consistently recognized as among the most innovative mainstream news sites.

FORBES: Washington Post Hires New Top Editor; Here Are The Memos

For the most part, mainstream media organizations reserve the right to accept all these types of advertising while refusing any individual ads they deem offensive or unethical.

FORBES: The Atlantic On That Scientology Advertorial: 'We Screwed Up'