The stability of our relations is much like the stability of a three-legged stool.

我们两国关系的稳定性就像一个三脚凳一样。

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But over the long term, money and power by themselves are like a two-legged stool — you can balance on them for a while, but eventually you're going to topple over.

但从长期来看，金钱和权力自身就像是一条只有两条腿的凳子——你可能会保持一阵子平衡，但最终还是会翻倒的。

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He says Obama has built his support on a "three-legged stool" made up of African-Americans, Hispanics and young voters of all races.

NPR: Obama Pushes Past Race Barriers, Wins White House

Like a three-legged stool, we should not support any vision for the future of our energy economy that does not satisfy all of these criteria equally.

FORBES: Backup Generators Are the Bad and Ugly of Decentralized Energy

Ronald Reagan forged a winning electoral majority on the stable foundation of what he described as a three-legged stool: fiscal discipline, traditional values and peace through strength.

CENTERFORSECURITYPOLICY: The G.O.P.'s One-Legged Stool?