这差不多是地球的2.5倍！这是第一次可口可乐公司表示它每年使用300万吨塑料瓶。

That's nearly two and a half times around Earth! For the first time, Coca Cola has shown that it uses 3,000,000 tons of plastic bottles each year.

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每年有700万吨塑料被制成塑料瓶，而这些塑料瓶只被使用一次。

7 million tons of plastic is turned into bottles which are only used once each year.

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只使用一次天平，如何找出盛有9克药的那一瓶？

You have a scale that can be used only once. How can you find out which bottle contains the 9 gram pills?

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