燃烧的硫磺会产生有毒烟雾。
从化工厂熊熊烈火中泄漏出团团有毒气体。
Clouds of toxic fumes escaped in a huge chemical factory blaze.
我们的汽车每年排放出成千上万吨的有毒尾气。
Our cars pump out thousands of tonnes of poisonous fumes every year.
这项研究包括了一些有毒的蜥蜴。
受害者可能接触到了有毒或放射性矿物。
Victims may be exposed to poisonous or radioactive minerals.
一些有毒物质流入我们作为饮用水的河流中。
Some poisonous substances are flowing into the rivers that are sources of our drinking water.
要是知道这蘑菇有毒，她也不会采来做晚餐了。
If she had been aware that the mushroom was poisonous, she wouldn't have picked it for dinner.
有毒的矿物质首先被根部吸收，然后转移到茎和叶上。
Toxic minerals would first be absorbed by roots but later relocated to the stem and leaves.
来自海豹死亡海域的海水样本确实含有异常高浓度的有毒细菌。
Seawater samples from the area where the seals died did contain unusually high concentrations of the toxic bacterium.
毒蛇是一种分泌有毒物质或毒液的动物，像蝰蛇科的蛇或眼镜蛇。
Ok, venomous snakes are the ones that secrete poisonous substances or venom, like the snakes of the viper family or cobras.
整个植物，也被称为芸豆树，是有毒的，尽管有人说它的花无毒。
The entire plant, also known as a kidney bean tree, is toxic, though some say the flowers are not.
此外，地热加热的水可能含有从热岩石中溶解出来的盐和有毒物质。
In addition, water heated geothermally can contain salts and toxic materials dissolved from the hot rock.
火海胆鲜红的颜色警告捕食者它的刺有毒。海獭是海胆的主要捕食者。
The bright red color of a fire urchin warns predators that its spines are poisonous. Sea otters are the major predators of sea urchins.
你通过鞋子带进家里的灰尘和有毒化学物质会使家里的空气质量恶化。
The dust and toxic chemicals you bring into your house via your shoes can deteriorate the air quality in your home.
它们能在含有对大多数其他植物有毒的高浓度金属的土壤中茁壮成长。
They can thrive in soil with high concentrations of metals that are toxic to most other plants.
在欧洲，人们多年来一直认为西红柿有毒，人们种植西红柿只是为了装饰。
Considered poisonous for many years in Europe, tomatoes were grown for decoration only.
其他哺乳动物如鸭嘴兽和一些鼩鼱是有毒的，这意味着它们会在体内产生一种毒素。
Other mammals, such as the platypus and some shrews, are venomous, meaning they produce a toxin internally .
由于它们缺乏氧气，沼泽沉积物中的硫化物含量很高，而硫化物对大多数植物都有毒。
Because they lack oxygen, marsh sediments are high in sulfides that are toxic to most plants.
环保人士和地方政府越来越关注于旧电子设备带来的有毒危害以及安全回收这些产品的成本。
Environmentalists and local governments are increasingly concerned about the toxic hazard posed by old electronic devices and the cost of safely recycling those products.
狗舌草含有大量有毒且适应力强的生物碱：即使是用它的花制成的蜂蜜也含有稀释后的毒素。
Ragwort contains a battery of toxic and resilient alkaloids: even honey made from its flowers contains the poison in dilute form.
尽管有特征说明蘑菇是有毒的，但它们是不一致的，所有来历不明的蘑菇都应该被认为是有危险的食物。
While there are signs that a mushroom is poisonous, they are not consistent, and all mushrooms of unknown origin should be considered dangerous to eat.
如果没有真正的无毒蛇，那些所谓的无毒蛇，比如蟒蛇和巨蟒，在它们进化过程中的某个阶段是有毒的吗？
If there are no truly non-venomous snakes, were the so-called non-venomous snakes, like constrictors and pythons, were they venomous at some point in their evolution?
她发现，许多家庭都暴露在高水平的、有时是致命的化学物质和其他有毒物质中，但她不被允许公开自己的信息。
She found many families were being exposed to high, sometimes deadly, levels of chemicals and other toxic substances, but she was not allowed to make her information public.
由于她的努力，全国数十个包含有毒物质的区域已被清理干净，一位化工行业发言人称她为“环保运动的先锋”。
Because of her efforts, dozens of toxic sites across the country have been cleaned up, and one chemical industry spokesperson calls her "a top gun for the environmental movement".
这种援助对于查明潜在危险——有毒物种、不可预测的河流、未知领域——至关重要，那些危险可能意味着生死之差。
Such assistance was essential in identifying potential dangers—poisonous species, unpredictable rivers, uncharted territories—which could mean the difference between life and death.
在研究这些疾病爆发的过程中，科学家们发现受影响的树木会向树叶中释放以酚类物质为主的有毒化学物质进行反击。
In studying these outbreaks, scientists have discovered that affected trees fight back by releasing toxic chemicals, mainly phenols, into their foliage.
收割下来的枝叶会将有毒的化合物转移到远离这片区域的地方，它们将被焚烧或者用作堆肥，回收金属物质用于工业用途。
A harvest of the shoots would remove the toxic compounds off site to be burned or composted to recover the metal for industrial uses.
有毒化学物质在我们的生活中随处可见，比如公共草地上用于杀虫的化学制剂，以及公共区域地板上用于清洁的化学物质。
Toxic chemicals are everywhere in our lives—insect-killing chemicals used on public grass areas, cleaning chemicals on the floors of public areas.
也许在以前的生物课上，你学过蛇是由蜥蜴进化而来的，而且最初的蛇是没有毒的，后来出现了更高级的蛇，也就是毒蛇。
Probably back in some previous biology course you learned that snakes evolved from lizards, and that the first snakes weren't venomous and then along came more advanced snakes, the venomous snakes.
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