clean-air是什么意思

详细释义

• 0 relating to rules that limit what vehicles can be used, what fuels can be burned, etc., in order to reduce the amount of pollution in the air -- （燃料等）清洁的，不污染空气的

  • More factories are using low-sulphur coal to comply with clean-air regulations. 越来越多的工厂正在使用低硫煤来遵守清洁空气法规。

  • Clean-air advocates say health costs must be weighed along with the expense to business. 清洁空气倡导者表示健康代价必须与商业成本一起权衡。

  • The city has been designated a clean air zone. 这个城市已被指定为清洁空气区。