有件东西已经成为哪家跨国公司的老板正在中国的指示器--哪家公司租用了北京机场到城区公路旁的巨型广告牌并在上边宣传该公司的产品，大家对此都已心知肚明。

One example has become a well-understood signalling device for who is visiting China: the rental of a huge billboard on the road between Beijing airport and the city to advertise a firm's products.

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与传统广告形式（电视、广播、印刷品和广告牌等）相比， “点击付费”广告的好处不言自明。

The benefits of the pay-per-click approach over traditional advertising (television, radio, print and billboards) are obvious.

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