On every packet of cigarettes, people are warned against the dangers of smoking: "Warning: Cigarette Smoking Is Dangerous to Your Health."

每包香烟上都会警告人们吸烟的危害：“警告：吸烟有害健康。”

youdao

Smoking is dangerous, as well as making you smell bad.

吸烟不仅使你身上有气味，而且危险。

youdao

Smoking is dangerous. People who smoke a lot are in danger (of suffering from lung cancer).

吸烟是有危害的。常吸烟的人有(患肺癌的)危险。

youdao

Doctor Terry Pechacek at the C.D.C. says the findings should persuade every country that smoking in enclosed spaces is very dangerous to nonsmokers.

VOA: special.2009.01.07

It has long been the consensus in the medical profession that passive smoking is dangerous, so there was outrage when the British Medical Journal of May 17th published a study which found that non-smokers whose spouse smoked did not suffer lung cancer or other smoking-related diseases as a result.

ECONOMIST: Ups and downs for Big Tobacco

When a Downing Street advisor points out that loneliness is probably more dangerous to our health in retirement than smoking, there are plenty who immediately assume that the advice is part of some dastardly statist plot to get pensioners out of their one-bed flats to sweat their final years away on a factory production line - see below for one example.

BBC: Friends are a matter of life and death

Regular puffing on cigarettes is now thought much more dangerous than occasionally smoking crack.

ECONOMIST: But efforts to warn people off drugs are still too timid