Câu ví dụ #1
1. Bauxite mining took off in Malaysia -- most of it illegal -- shortly after Indonesia, a top producer, banned mineral ore exports in January 2014 to encourage domestic metals processing, leaving major consumers in a supply crunch.
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2. Shares of resource businesses tumbled roughly 6 percent in China and nearly 5 percent in Hong Kong, while an index tracking nonferrous metals prices in Shanghai also dropped sharply.
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3. The following month, the European Union reported having rejected 11 shipments of shrimp in the past nine months due to high levels of heavy metals.
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