阅读下面短文，将短文中画线部分的句子翻译成中文。 Read the passage and translate the under lined sentences.

1:Smoking is bad for your health. However, there are still about 2 billion people smoking all around the world, according to the World Health Organization.

2:When someone smokes, they hurt not only themselves, but also the people around them. Second-hand smoke greatly increases many dan-gers, such as respiratory disease （呼吸疾病）, cancer and heart disease.

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