1.
Marianne was all the time busy in observing the direction of the wind, watching the variations of the sky, and imagining an alteration in the air.
玛丽安则一直忙于观察风吹的方向，注意天色的变化，幻想来一次空气的对流。
2.
METEOROLOGICAL CONDITIONS OF A CONTINUOUS AIR POLLUTION PROCESS IN NANCHANG CITY
南昌市一次连续空气污染过程的气象条件分析
3.
Analysis of a shut-down accident caused by automatic air switch trip
一次自动空气开关跳闸引起停机事故的分析
4.
secondary air injection relief valve
二次空气喷射减压阀
5.
Analysis of a Large-scale haze in a cold air invasion process over Jiangxi province
江西省一次冷空气过程中的灰霾天气过程分析研究
6.
Analysis on Spatial-temporal Characteristics of Air Pollution during a Regional Haze Episode over Pearl River Delta
珠江三角洲一次大范围灰霾天气下的空气污染特征分析
7.
Once they are out on the street, the cars will take in air and replace it with poisonous gases. Again, more smoke and soot.
汽车一旦出厂在街上行驶，将会吸进空气，排出有毒的气体，再次增加空气中的烟尘。
8.
At one point the company bought from Nippon Airways a 727 jet.
有一次公司从日本航空公司买了一架727型喷气机。
9.
hygienic habits like using disposable tissues; hygienic surroundings with plenty of fresh air.
诸如使用一次性纸巾等的卫生习惯；充满新鲜空气的健康环境。
10.
The city inaugurate the clean - air campaign with a bicycle parade
该市举行了一次自行车队游行以示净化空气运动的开始
11.
These were the first toxic air pollutant standards developed under the two-step procedure ordered by the court of appeals.
根据上诉法院安排的两步程序，第一次提出有毒空气污染物的标准。
12.
There are a few problems of air pollution by chemicals, lint, etc., but these are minor.
化学品、棉花等也造成一些空气污染问题，但这是次要的。
13.
The city inaugurated the clean-air campaign with a bicycle parade.
该市举行了一次自行车队游行以示净化空气运动的开始。
14.
The source of the arctic air for this cold wave may be traced upstream tothe Arctic Ocean to the east of Greenland.
此次寒潮的冷空气源地,一直可以溯源至格林兰东方的北冰洋上。
15.
A CASE STUDY OF THE CHARACTERISTICS OF STRONG WIND NEAR THE OCEAN SURFACE DURING A STRONG COLD AIR PROCESS IN BOHE GUANGDONG
广东博贺近海海面的一次冷空气过程强风特征分析
16.
The air was pure and cold．The sun，painting the sky with an intense blue，again hid the ever-watching stars．
空气纯净而清冷，太阳将天空刷成蔚蓝的一片，阳光也再一次藏起了星星，可它们仍在那儿张望着。
17.
But time after time the line came up empty.
但一次又一次，绳子拉上来，空无一物。
18.
The top line showed my tidal volume- the amount of air inhaled with each breath- over the16 minutes that I'd worn the LifeShirt.
最上头的一条显示我穿著「命衣」6分钟之间的潮气量，也就是每次吸入空气的量。