Today we have the three largest buildings in the world, the largest grain exchange in the country, and the world's busiest airport, o 'hare International.

今天，我们拥有世界上的三大建筑，全国最大的谷物交易所，世界上最繁忙的机场，欧海尔国际大厦。

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The magnetization behavior and inter-grain exchange coupling of the ribbons were studied in terms of the initial magnetization curves, the minor hysteresis loops and the recoil loops.

通过测量样品的起始磁化曲线、小回线及回复曲线，分析了样品中的磁化行为及晶间交换耦合作用。

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For example, farmers brought a bag of grain in exchange for a ticket.

例如，农民带了一袋粮食来换取一张票。

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Even so, in contrast to only ten years ago, the firms operating in Kansas City today are largely the same as those trading soft red winter wheat at the Chicago Board of Trade and spring wheat at the Minneapolis Grain Exchange.

ECONOMIST: Grains of truth

The contract, which allows participants to lock in prices rather than having to pay the going rate at the time they need apples, started trading on the Minneapolis Grain Exchange Inc. on Aug. 13 and was listed on CME Group Inc.

WSJ: For Investors, a New Pick of the Crop

This summer the exchange announced it would electronically list agricultural contracts and futures from two Midwest grain exchanges, in Kansas City, Mo. and Minneapolis--which themselves have inched in a digital direction.

FORBES: Last Call