In another set of experiments, Kramer put identical food boxes around the cage, with food in only one of the boxes.

在另外一组实验中，克雷默在鸟笼周围放置了完全相同的食盒，这些食盒中只有一个食盒有食物。

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Breathing it, Robert felt as if he was set free from a cage.

呼吸着空气，罗伯特感觉自己像是被人从牢笼释放出来一般。

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Inflation is like a tiger, once set free it will be very difficult to bring the tiger back into its cage.

通货膨胀就像一只老虎，如果放出来就很难再关进去。

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The scents are applied to the top of a cylindrical cage set on the edge of cropland.

WSJ: Out of Odor: Offensive-Smelling Bugs Put U.S. Farmers on the Defensive

In an effort to find out, the Pew Charitable Trusts asked my Tax Policy Center colleagues Eric Toder, Jim Nunns and Joe Rosenberg to set up something of a cage match: In the blue trunks, a broad-based VAT (think 9-9-9 only much less complicated).

FORBES: Deficit-Fix Cage Match: VAT Vs. Higher Income Tax Rates

This time a single rook was presented with the same tray-string set-up, while its pair waited in a neighbouring cage linked by a one-way flap.

BBC: Rooks team up to solve problems