The emission limits should include the upper limit for emission concentration, the limit of unit product emission at exhaust funnels and the upper concentration limit for unorganized emission.
排放限值包括排气筒最高允许排放浓度，排气筒单位产品排放量和无组织排放最高允许排放浓度。
2
To avoid dangerous climate change we will have to limit the total amount of carbon we inject into the atmosphere, not just the emission rate in any given year.
Their bill would limit greenhouse gases by requiring polluters to receive or buy emission permits, with the number of available permits - the "cap" in "cap and trade" - gradually falling over time.