Vegetables are good for you, while smoking is bad for you.

蔬菜对你有好处，而吸烟对你有害。

youdao

But while smoking rates have fallen to their lowest ever level, experts fear the electronic substitutes could be encouraging teenagers to take up the habit.

但是，尽管吸烟的比率已经降到了最低点，专家们仍然担心香烟的替代品会使青少年染上吸烟的习惯。

youdao

And while you're there, tell us if you have been able to quit smoking, and what advice you might have for others.

VOA: special.2010.05.31

While smoking has fallen by half among high income groups since 1970, there has been little change among the poor.

ECONOMIST: Health

The acrid-tasting haze has kept old and young Texans indoors, and left others (such as your tennis-playing correspondent) feeling as though they were exercising while smoking.

ECONOMIST: Breathing Mexican air

While smoking will no longer be permitted inside offices, hospitals, train stations, airports, shops and schools, the country's bars, cafes, restaurants and licensed tobacco bars have been given another year to kick the habit.

NPR: French Begin to Put Smoking Ban in Place