This very low base-rate means that any precursors of a quake would have to be incredibly reliable if decision-makers are to feel safe in using them to order mass evacuations.

这么低的基础概率意味着，如果要让决策者下定决心，进行大规模人口疏散的话，任何地震前兆都必须极其可靠。

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The “mass affluent” too—dentists, doctors, prosperous small businessmen—are placing money offshore and putting a broader swath of the tax base at risk.

大量的高收入阶层包括牙医、医生和那些收入丰厚的小型企业主都开始将资产转移到离岸金融中心，冒险尝试更加灵活的税收。

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World soccer powers are, without exception, to ensure a strong mass base, and our neighbors on the cultivation of young people in Japan gave us set a good example.

世界足球强国无一例外都是以强大群众基础为保证的，我们的邻国日本在青少年的培养上就给我们树立了一个好的典范。

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AOL's flair for understanding the needs of the mass market and the size of its subscriber base will combine with Netscape's Internet browser and electronic-commerce software.

ECONOMIST: Internet riders

Above the central mass sits the cubic base of the bell tower, which in turn rises solidly as a cylinder, then a drum capped by the dome.

WSJ: Prim Grandeur, Elegant Geometries | Charles Bulfinch | Lancaster Meetinghouse | By John Wilmerding

"With the installed base of Android and Tegra already at critical mass, developers looking to have their games stand out have the promise of financial reward to invest in high-end content, not to mention the hardware processing that can power next-generation games, " Iida said.

CNN: Gaming is a top priority for mobile-tech makers