本期内容：

The "ground-breaking" sugar tax on soft drinks has come into force in the UK. From Friday manufacturers have to pay a levy on the high-sugar drinks they sell. Ministers and campaigners believe it has already proved to be a success with many firms reducing sugar content ahead of the change. But others say it is still too early to judge the impact.

ground-breaking: adj. 开天辟地的
come into force: 开始生效
come into being执行
levy: n. 税
campaigner: n. 竞选者
impactv. 影响

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