Sierra Leone's average incident rate was one attack for every 692 Web surfers.
塞拉利昂的攻击发生率为1/692。
When Web surfers arrive at those sites and click on those ads, Google and Yahoo!
当有上网者进入这些网址并点击了这些广告,Google和yahoo !
Beginning and advanced Web surfers alike rely on links to navigate around the Web.
无论上网新手还是高水品的网上冲浪者都依靠链接在Web上导航。
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