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Over the past three years, Campbell has taught himself how to make animal toys for children in the hospital.

在过去的三年里，坎贝尔自学了如何为医院里的孩子们制作动物玩具。

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Three were plant-eaters. They were the western horse, the ancient bison and a two-meter tall animal called the Harlan's ground sloth.

VOA: special.2010.04.07

Ray Romano,John Leguizamo and Dennis Leary return as the voices of the three main animal characters.

VOA: special.2009.06.12

The three animal species listed have been dwindling in numbers.

BBC: WWF: Asia fuels illegal wildlife parts trade

Then, in December, the European Court of Justice agreed to review a complaint from three French animal-rights campaigners, backed by the European Commission on Human Rights, who say that the French law letting shooters on to smallholders' land violates property rights and freedom of association because it forces people to become de facto members of the local field-sports association.

ECONOMIST: France��s angry countrymen

Thanks to the three Rs, animal research had been falling from a peak of about 5.5m procedures a year in the 1970s, but recently numbers have stabilised, as genetically modified animals have started to be used to model human disease.

ECONOMIST: Animal rights extremists