Today, no huge improvement for the automobile or airplane is in sight, and the major struggle is to limit their pollution, not to vastly improve their capabilities.
今天，在汽车或者飞机上没有值得一提的较大的改进，但这些都是在限制污染上大费周章，而并不是在性能上的大幅改善。
In order to create an environmentally friendly and safe world, it is necessary for each country to set vehicular quotas and limit the permits in number to control regional air pollution.
为了创造一个有益于环保和安全的世界，每个国家都有必要定出汽车限额，并限制发放许可证的数量，以控制地区的空气污染。
Two approaches are on offer. Some think the best way to limit emissions is to tax them; others argue for a system that sets a cap on pollution, and lets polluters trade the right to emit.
可供选择的方法有两种：有的人认为向排放物征税是最佳的限制手段；其他人支持一种对污染物施加管制的方案，并允许污染者将排放权进行交易。
The muddle over how to limit water pollution from a refinery, which at least is easy to identify, does not bode well.
不知如何限制精炼油厂污染水源并不是一个好兆头，因为至少这种污染源点是容易确定的。
Of the many rules that limit pollution to the lakes, the most important is the Clean Water Act. But implementing it remains as tricky as ever.
在限制污染湖水的诸多条规中，最重要的还是净水法(CleanWater Act)，而它的实施一直十分棘手。
The key point of controlling indoor air pollution is controlling materials to limit and stop using pollution materials and to promote using green materials.
同时指出，控制室内环境污染的关键是控制材料，限制或禁用污染材料，提倡使用绿色建材。
It embodies the visual limit between the public and private realms, while it shelters the upper domains from noise pollution and the mechanical equipment on the ground-floor.
它体现了公共和私人领域之间的视觉界限，虽然在卧室有噪声污染并且楼下有机械设备。
Then, the concentration under different wind diffusion condition are analysized by using ground pollution mode so that the ratio of contribution to the total pollution limit is obtained.
之后采用近地面尘降模型，计算了这类污染源在不同气象层结下的扩散状况，得出其污染浓度对大气环保浓度的分担率。
The PAHs density is far higher than the limit of"environmental quality standard of surface water"which proves that PAHs pollution of the Meiliang bay source water is serious comparatively.
其中梅梁湾水源地水体中苯并（a）芘浓度远高于《地表水环境质量标准》规定的要求，说明梅梁湾水源地受苯并（a）芘的污染较为严重。
LK-45 addition proved to be desirable for pickling solutions since its application can greatly decrease the acid consumption, and steel loss, improve environment and limit pollution.
LK - 45缓蚀剂可明显降低酸耗和钢耗，改善环境，减小污染，是一种较理想的酸洗液缓蚀剂。
The plan calls for construction sites to limit construction activity that creates large amounts of dust, as well as asks industrial enterprises to reduce emissions, during hazardous pollution days.
该应急方案规定，严重污染日时，建筑施工工地应减少产生大量灰尘的施工行为，并要求工业企业减少排放。
They said that "This limit of growth will appear someday in 100 years to come if the momentum of present population, industrialization, pollution, food production and resources consuming went on."
他们提出“如果在世界人口、工业化、污染、粮食生产和资源消耗方面现在的趋势继续下去，这个行星上增长的极限有朝一日将在今后100年中发生。”
This study also researches the ecological system of Chengdu city. The history data shows that the pollution emission of Chengdu is over the limit badly.
之后，本文通过水质分析对成都市的生态系统进行了研究，实测数据显示成都市污染物排放严重超标。
The industry is also producing cars that limit pollution and have a less harmful effect on the environment.
汽车产业还生产出污染少的环保汽车。
Check availability of hydraulic oil metamorphism, pollution, highly liquid fuel tank is not whether the lower limit markers, the high-pressure piping, joints have leakage.
检查液压油有无变质、污染，油箱液面高度是否不低于正常标记下限，各高压力管、接头是否有泄漏。
In the film began to reveal the survival environment around us constantly destroyed: greenhouse gas emissions, global temperatures rise without limit, level rises, consumption of water pollution.
片中开始就透露我们周围的生存环境不停的遭到破坏：温室气体的无限制排放、全球气温上升、水平面上升、食用水被污染。
In the film began to reveal the survival environment around us constantly destroyed: greenhouse gas emissions, global temperatures rise without limit, level rises, consumption of water pollution.
片中开始就透露我们周围的生存环境不停的遭到破坏：温室气体的无限制排放、全球气温上升、水平面上升、食用水被污染。
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