查询词典 tread on air

First of all, the air pollution is the most important problem.

首先，空气污染是最重要的问题。

So from now we have to reduce the air pollution and take care of our environment.

因此，从现在我们已经以减少空气污染和照顾我们的环境。

With the rapid development of industry, the air pollution has become more and more seriously.

随着工业的迅猛发展，大气污染已经成为一个日益严重的问题。

But they are also responsible for a good part of air pollution in big cities.

但他们也是一个大城市空气污染的很大一部分责任。

It was the worst in London's history of air pollution.

这是伦敦历史上空气污染最严重的一次。

There is a lot of pollution in the air here.

这里的空气有大量的污染物质。

Air pollution is a serious problem in this area.

这个地区的空气污染问题很严重。

I can't bear the air pollution in the city anymore.

我忍受不了这个城市的污染了。

Air pollution is one of the problems that we can't afford to＿.

空气污染是我们不可忽视的问题之一。

I want to write an article about the air pollution in this city.

我想写一篇关于该市空气污染的文章。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。