Of the 100 most populous cities, 22 are smoke free.

在100个人口最多的城市中，22个为无烟城市。

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Only large restaurants and bars were obliged to provide a smoke-free area.

只有大型餐馆和酒吧才有义务提供无烟区。

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Every person should be able to breathe smoke-free air.

每个人都应有权呼吸无烟雾的空气。

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A new study has found the strongest evidence yet that smoke-free laws can reduce a major effect of tobacco smoking - heart disease.

VOA: special.2009.01.07

The American Lung Association says half of the fifty states have passed smoke-free laws.

VOA: special.2009.05.27

Gapstur credits the reduction in cigarette smoking, sparked by education campaigns, smoke-free laws,taxes and social policies for that.

VOA: standard.2010.03.25

The move was part of Cardiff and Vale University Health Board's policy of running smoke free sites.

BBC: Cardiff and Vale hospital fines 100 litter droppers

China signed on in 2006, committing to make areas smoke free by law.

FORBES: A Nurse's Mission To Keep Chinese Women From Smoking

The proposals mean all restaurants in England would be smoke-free, along with pubs and bars serving food, she added, and "non-food" pubs and bars will be free to choose whether to allow smoking, or be smoke-free.

BBC: NEWS | UK | UK Politics | Cabinet agrees England smoke ban