Dont smoke in the car - smoke is more concentrated in confined spaces 不要在车上吸烟因为狭小的空间会让烟的浓度增加。
2.
Dont let anyone smoke in the car smoke is more concentrated in confined spaces 不要让任何人在车上吸烟因为狭小的空间会让烟的浓度增加。
3.
The government is considering amendment to the relevant provisions so that the ringelmann chart as adopted in the air pollution control ordinance ( cap . 311 ) will be used to determine the concentration of smoke 政府正考虑修订有关的法例，改用已在《空气污染管制条例》 (第311章)中采用的力高文图表断定黑烟的浓度。
