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There was no modern air conditioning and air pollution from factories was a problem.

没有现代的空调和来自工厂的空气污染是个问题。

There was no modern air conditioning and air pollution from factories was a problem .

没有现代的空调，同时来自工厂的空气污染也是个很严重的问题。

There was no modern air conditioning and air population from factories was a problem.

没有现代的空调系统，而且来自工厂的空气污染也是一个问题。

The threat that modern fleet met with mainly from the air,and the radar plays a very important role in fleet air defence,therefore,how to meet the requirements of the fleet to the radar in air defence operation becomes a very important direction of shipboard radar development.

现代舰艇编队受到的威胁主要是来自于空中，而雷达在舰艇编队防空中扮演着非常重要的角色，因此，如何满足舰艇编队在防空作战中对雷达的需求也就成为舰载雷达发展的一个重要方向。

About 20 percent of airline revenues comes from air freight.

航空公司大约20%的收入来自航空运输。

Currently, 70% of primary energy in China comes from coal, creating large amounts of air pollution and greenhouse gas emissions.

如今， 在中国， 70%的初级能源来自于煤炭，而由此产生了严重的空气污染和大量的温室气体排放。

The Committee for the Scientific Survey of Air Defence, headed by Henry Tizard , appointed observers from Farnborough to advise on points of scientific importance which might be otherwise be overlooked.

由 Henry Tizard 领导的防空科学调查委员会，要求来自 Farnborough 的观察员从另一个视角提出正确重要的建议。

The bus from the air terminal leaves at 8 o'clock.

来自航空集散站的这辆客车8点出发。

We are still waiting for clearance from Air Traffic Control.

我们仍在等待来自航空交通控制部门的批准。

We are talking about volcanoes with repercussions of air pollution as well as damage from lava.

我们正在谈论火山带来的空气污染以及来自岩浆的破坏。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。