有机物，被叫做多环的芳烃，是一些尘埃，含碳分子帮助恒星的形成。
The organics, called polycyclic aromatic hydrocarbons, are dusty, carbon-containing molecules that help in the formation of stars.
巨大的抛射物撞击更大的天体，创造了各种各样的陨石坑，包括多环盆地——这是在行星和卫星上观察到的最大的地质特征。
Massive projectiles striking much larger bodies create various kinds of craters, including multi-ring basins—the largest geologic features observed on planets and moons.
大量的抛射物撞击更大的天体，形成各种各样的陨石坑，包括“多环盆地”——在行星和卫星上观察到的最大的地质特征。
Massive projectiles striking much larger bodies create various kinds of craters, including "multi-ring basins"—the largest geologic features observed on planets and moons.
报道了通过串联环加成芳构化反应合成多取代芳族化合物的方法。
The synthesis of polysubstituted aromatic compounds by using a tandem cycloaddition aromatization reaction was reported.
委员会通过了关于在食品最后制备过程中减少多环芳烃摄入的第一份准则。
The Commission adopted the first guidelines for reducing polycyclic aromatic hydrocarbons (PAH) intake through final food preparation.
还有一个要担忧的问题：肉类的油脂滴落在热烫的煤炭、石头或者炉子上会产生另一种致癌物质——多环芳烃。
There's also concern that fat dripping from meat onto hot coals, stones or burners creates additional carcinogens called polycyclic aromatic hydrocarbons.
为了研究香烟中的成分是怎样影响人类DNA的，赫克特和他的研究小组对12名志愿者进行了 PAH，即多环芳烃追踪。
To study how a cigarette's contents impact human DNA, Hecht and his team used 12 volunteers to track PAHs, or polycyclic aromatic hydrocarbons, which are pollutants found in tobacco smoke.
该机构正在要求FDA就多环芳烃对怀孕妇女和儿童无害的最低安全含量做出规定。
The group is requesting that the FDA enact a rule that sets a limit on the amount of polycyclic aromatic hydrocarbons deemed safe for pregnant women and young children.
在这一环节上要花费你所需要的尽可能多的时间，因为一旦你开始运用用完了写作素材，你就要开始从你倒出来的东西里挑选你想要的进行写作。
Spend as much time as you need on this step, because once you run out of things to write, get started picking the parts of the “barf” you want to use for your book.
在城市地区机动车辆是多环芳烃的主要来源。
我们希望号码分配能够在包含多线程、多处理器、多服务器、多层和多用户P8环境中可靠地工作，并且实现出色的性能。
We want all of this to work reliably and with decent performance in a P8 environment that has multiple threads, multiple processors, multiple servers, multiple tiers, and multiple users.
一些专家对这项发现提出问题因为尽管暴露的环境中多环芳烃含量有八倍的不同但是智商值的减少却相似。
Some experts say the findings raise questions because the IQ losses were similar in the two groups despite the eightfold difference in their average level of exposure.
这一研究发现值得关注，因为智力是未来学习表现的一个重要预测的因素，多环芳烃在城市环境和全世界都广泛传播。
This finding is of concern because IQ is an important predictor of future academic performance, and PAHs are widespread in urban environments and throughout the world.
多环芳烃是由煤炭、柴油、石油和汽油的燃烧释放出来的，或者如烟草这样的有机物。
PAHs are chemicals released into the air from the burning of coal, diesel, oil and gas, or other organic substances such as tobacco.
她不知道在怀孕期他是处在多环芳烃含量高还是低的环境中的。
She does not know whether her exposure to PAHs during the pregnancy was classified as high or low.
环法国和意大利的巡回赛每年举行，其行程长达2,000多英里。
The tour RACES of France and Italy, (held each year), cover more than 2,000 miles.
赫克特特别注意追踪特定的一种多环芳烃——菲，因为菲存在于香烟烟雾中。
One specific type that Hecht was particularly interested in tracking was phenanthrene, which is in cigarette smoke.
斯蒂门记录有另一种对有毒的多氯联苯和多环芳烃有抵抗作用海岸物种，那是一种鳉鱼。
Stegeman has been chronicling resistance to toxic PCBs and polycyclic aromatic hydrocarbons in another coastal species, a killifish.
制备食品时的烟熏和直接干燥工序在燃烧过程中形成的部分多环芳烃可能是人类致癌物。
Parts of PAH are possible human carcinogens formed during the combustion of fuel both in the smoking and in the direct drying processes involved in the preparation of food.
没有证据证明 多环芳烃对她女儿的智力产生了影响。
There is no evidence that the PAHs affected her daughter’s IQ.
参与者们沿着停车场双环塔的栏杆依次排列，与白色建筑“交相辉映”，形成了一种多色的条纹状图案。
Participants lined the railings of the garage's twin circular towers, creating a pattern of multicolor stripes against the white building.
多环芳烃来自于汽车尾气以及住宅供暖和发电的排放。
PAHs are in car or bus exhaust and emissions from residential heating and power generation.
绿色则表明了大分子多环芳香烃的存在。
The green indicates the presence of complex molecules called polycyclic aromatic hydrocarbons.
科学家知道许多化学物质包括多环芳烃能通过胎盘，但是他们不理解的是这些物质是如何渗入到胎儿发育的大脑中的。
Scientists know that many chemicals including PAHs can cross the placenta, but they don't understand how they may interfere with a fetus' developing brain.
总共有140名儿童被分为多环芳烃的高接触者。
A total of 140 children were classified as having high PAH exposure.
研究对象的香烟中添加了一种多环芳烃化合物，该物质进入人体后被转化为另一种破坏dna的致癌化学物质。
A PAH was added to the subject's cigarettes, which was then modified by the body and turned into another chemical which damages DNA and has been linked with cancer.
所以他才用了这么多玄而又玄的术语，还有这么多一环套一环的从句。
That was why he deployed so much arcane terminology, so many loop-de-looping clauses.
佩雷拉说好消息是纽约市的多环芳烃含量正在减少。
The good news, Perera said, is that levels of PAHs are declining in New York City.
这些结果具有重要意义，因为多环芳烃二醇环氧化物极易与DNA反应，进而导致变异，因此被视为香烟烟雾中所含多种多环芳烃中最重要的致癌物质。
These results are significant because PAH diol epoxides react readily with DNA, induce mutations, and are considered to be ultimate carcinogens of multiple PAH in cigarette smoke.
这些结果具有重要意义，因为多环芳烃二醇环氧化物极易与DNA反应，进而导致变异，因此被视为香烟烟雾中所含多种多环芳烃中最重要的致癌物质。
These results are significant because PAH diol epoxides react readily with DNA, induce mutations, and are considered to be ultimate carcinogens of multiple PAH in cigarette smoke.
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