Rhino horn has been used in traditional medicine in China and Vietnam for centuries.

在中国和越南，犀牛角被用作传统药物已长达几个世纪。

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At a farm in Vietnam, bile is pumped from a sedated Asiatic black bear, violating national law. Thousands of wild bears have been captured to supply this traditional medicine.

在一个越南的农场，从一只被麻醉的亚洲黑熊身上抽取胆汁，尽管违反了国家的法律。数千只野生黑熊已经被捕捉来提供这种传统医药。

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These products are mainly applied in the fields of chemistry, lighting, medicine, food and metallurgy. They are exported to Europe, the USA, Japan, Singapore, Vietnam and other places of the world.

产品主要应用于化工、轻工、食品、医疗、冶金等行业，出口到美国、日本、新加坡、越南等国家。

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The numbers have soared in recent years to meet the demand for their horns in Asian traditional medicine, especially in China and Vietnam, where they are thought to have powerful healing properties.

BBC: South Africa seizes $7m in 'rhino-poachers' assets

The killing of rhinos has soared in recent years to meet the demand for their horns in Asian traditional medicine, especially in China and Vietnam, where they are thought to have powerful healing properties.

BBC: South Africa rhino poaching: More killed than ever

The horns are used in traditional medicine in countries such as China and Vietnam.

BBC: Black rhino threat: Poachers target Kent wildlife parks