一团黑色粉尘落到了这些墙上。
作物粉尘中使用的化肥中有某些化学物质会影响胎儿。
There be certain chemicals in fertilizers used to crop-dust cotton that affect the unborn fetus.
粉尘螨及屋尘螨过敏原皮肤针刺试验结果与哮喘急性发作严重程度有关。
Results of dermatophagoides farinae and dermatophagoides pteronyssinus by skin prick test were related to the grades of asthma.
第四章防治废气、粉尘和恶臭污染。
Chapter iv Prevention of Waste Gas, Dust, and Offensive Odor pollution.
术语上这些残骸被称为有机粉尘。
These remains are known in the jargon as particulate organic matter.
它是世界上最偏远的群岛之一，每天空气粉尘也难得一见。
It's one of the most remote archipelagos in the world and receives very little dust.
因风蚀和其他空气污染物而形成的大气粉尘造成呼吸系统疾病；
respiratory diseases caused by atmospheric dust from wind erosion and other air pollutants;
它的主要组成成分是硫酸盐、硝酸盐、氨、氯化钠、碳、矿物粉尘和水。
The major components of PM are sulfate, nitrates, ammonia, sodium chloride, carbon, mineral dust and water.
当原材料被放入原始的煮锅烧沸以提炼水银时他们吸入有毒的粉尘和蒸汽。
They inhaled toxic dust and vapours as the material seethed in primitive cauldrons to extract the mercury.
当粉尘达到一定量，系统将发生反应并产生一个电荷，太阳能板产生电流。
Once the dust reaches a specified level, the system reacts and produces a charge, with electricity generated by the panel.
Gourmelon表示，“重点在于防止放射性粉尘吸入肺部或消化道。”
"The point is to prevent radioactive dust from entering the lungs and the digestive tract," said Gourmelon.
戴维斯：火星上的问题包括辐射、可吸入粉尘、以及其他一些未知的严酷环境。
Davies: the problems on Mars include radiation, breathing dust, and other rigors of the environment that are unknown.
或者，它能够促使人们制造“能够像粉尘一样散发到空中的环境传感器，”他说。
Or it could lead to "environmental sensors that could be scattered like dust in the air," he says.
研究人员检测了座标零点粉尘中存在的数百种化合物，它们中的一些是致癌物质。
Researchers have reported the presence of hundreds of compounds in ground zero dust, among them known carcinogens.
从谷物升降机内的粉尘到喷漆中的有害有机物，这些面具保护工人免遭它们造成的伤害。
They protect workers against everything from flour dust in a grain elevator to the damaging organic chemicals in paint spray.
每隔两周用温肥皂水清洗引擎也是个好主意，这样可以去除堵塞气缸的过量粉尘和污垢。
It's also a good idea to wash your engine with warm soapy water every couple of weeks to dislodge the excess dust and grime that builds up on your engine block.
很难预测那时月面呈现的确切的色彩，因为这是由发生月食时大气中的粉尘和云朵决定的。
It's difficult to predict the exact shade the moon will take, which will depend on how much dust and clouds are in the atmosphere during the eclipse.
当传感器发现粉尘浓度达到了临界水平，就有一定的电荷促使该材料发出除尘波越过其表面。
Sensors detect when dust concentrations reach a critical level and then an electric charge energises the material sending a dust-repelling wave across its surface.
街道上都是带着面具的男男女女，用撕破的布围住鼻子和嘴以防吸入大量的碎片粉尘。
The streets filled with masked men and women, cloth and clothing torn to tie across their noses and mouths against the dense debris rain.
Nelson沿着隧道小心前行，绕过成堆的碎石和许多块像黒骰子般滚落到粉尘地上的煤炭。
Nelson picked his way along the tunnel, stepping around piles of broken stone and lumps of coal tumbled like black dice across the dusty floor.
唯一的问题是，斑蝥素是有毒的，并且受害者通常为无意饮用了含有这种粉尘饮料的女性。
The only problem is that cantharidin is toxic, and the victims are usually women who unwittingly consume the powder in a drink.
气象局说，这是自20世纪40年代以来最严重的沙尘暴，粉尘污染达到以往记录的10倍。
The bureau of meteorology said it was the worst dust storm since the 1940s, with particle pollution up to 10 times worse than the previous record.
发动机散发的热量能熔化微粒细小的岩石，随之分化的粉尘会裹住机器的冷却器直至使其停止运转。
An engine's heat melts the fine-ground rock, which proceeds to encrust the cooler parts of the mechanism, stopping it from working.
最近的一天，一队锃亮的运动多功能用车载著一个地区官员代表团，穿过布满粉尘的小路来见村民。
On a recent day, a shiny caravan of sport utility vehicles carrying a delegation of regional officials roared through the rutted mud lanes to meet with the villagers.
这些勤劳的小昆虫是世界上最大的授粉者，在它们为蜂巢收集花蜜的过程中，带着花粉尘掠过一个又一个花朵。
These industrious little insects are the world's greatest pollinators, carrying a dusting of pollen from flower to flower as they gather nectar for their hives.
刺激性支气管炎；刺激性支气管炎(又称工业或环境性支气管炎)是由接触各种矿石，蔬菜粉尘，香烟和烟雾。
Irritative bronchitis: Irritative bronchitis (also called industrial or environmental bronchitis) may be caused by exposure to various mineral and vegetable dusts as well as cigarette smoke and smog.
以废物能源公司为例，其首先赚取“门头费”，然后是为产生的能源收费，和在粉尘中的金属回收费。
A waste-to-energy firm, for example, earns "gate fees" for taking the waste in the first place, as well as payments for the power it generates and any metals it recovers from the ash.
奥尔特云是一个由粉尘和冰组成的庞大云带，据信它距离太阳约一光年，许多穿越我们太阳系的彗星都来自那里。
The Oort cloud is a vast belt of dust and ice that is believed to lie around one light year from the Sun and is the origin of many of the comets that pass through our solar system.
奥尔特云是一个由粉尘和冰组成的庞大云带，据信它距离太阳约一光年，许多穿越我们太阳系的彗星都来自那里。
The Oort cloud is a vast belt of dust and ice that is believed to lie around one light year from the Sun and is the origin of many of the comets that pass through our solar system.
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