Modern examples, such as Alex the African grey parrot, which could count up to six and knew sums and differences, are seen by some as special cases or the product of conditioning.

较近的例子，比如能数到6，懂得和与差的非洲灰鹦鹉alex，它只不过是特殊条件或训练的结果。

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This paper systematically sums up the reverse design theory of grippers on-off mechanism, applies it to develop the new product and the desired result has been achieved for.

本文系统总结了咬牙开闭机构的反求设计理论，并将其应用于实际的新产品开发中，取得了预期的设计效果。

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This part sums up a theoretical model of leisure tourism product development, and constructs a system of international leisure tourism products in Wuxi.

第七部分总结了休闲旅游产品的开发模式，构建了无锡国际休闲旅游的产品体系。

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IMF, churns sums equivalent to 2-5% of gross world product every year.

ECONOMIST: All havens in a storm | The

She could have created a lifestyle brand like Martha Stewart or Oprah Winfrey, and endorsed major corporations and product manufacturers, like Thermador and others, for large sums of money.

FORBES: Julia Child Foundation Embroiled In Lawsuits About Oven Ads

While these sums are large, even the higher add-ons would translate into an allocation of roughly four percent of Gross Domestic Product to national security.

CENTERFORSECURITYPOLICY: A Letter to the President