If you want to attack urban air quality, this is probably moving in the wrong direction.

如果你想要打击城市空气质量，这可能是一个错误的方向。

If more people join in the trend to ride bicycles to work then the air quality will be improved notably.

如果更多的人加入骑自行车上班的行列，那么空气质量将明显改善。

"All honorees commit to improving air quality," said Dr. Lucica.

博士卢卡奇表示：“所有获奖者都致力于改善空气质量。”

And improved air quality.

空气质量等问题。

Key findings in 2005 Air Quality guidelines.

2005年空气质量准则的主要结论。