Discontinuity is a key factor of stability of highway tunnel wall rock.

结构面是影响公路隧道围岩稳定的重要因素。

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And the stability of the euro zone is therefore an important factor of stability for the whole of the global economy.

WHITEHOUSE: President Obama and Chancellor Merkel Press Conference

With its off-center of gravity form factor, the 9.4-inch S1 offers stability and a sense of lightness, offering comfortable use for hours.

ENGADGET: Sony S1 and S2 dual-screen Honeycomb tablets get official (video)

But the ultimate determining factor in all this is the stability of the government.

ECONOMIST: Bagehot