It has proved toxic at some doses in animals and so cannot be used in humans.
一定剂量的苯丙胺是确证对动物有毒的，因此不能用于人类。
Toxic minerals would first be absorbed by roots but later relocated to the stem and leaves.
有毒的矿物质首先被根部吸收，然后转移到茎和叶上。
Because they lack oxygen, marsh sediments are high in sulfides that are toxic to most plants.
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。
They can thrive in soil with high concentrations of metals that are toxic to most other plants.
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。
The agency is now investigating the toxic effects of some of the chemicals in the latest report.
该机构目前正在调查最新报告中一些化学品的毒性作用。
The entire plant, also known as a kidney bean tree, is toxic, though some say the flowers are not.
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。
In addition, water heated geothermally can contain salts and toxic materials dissolved from the hot rock.
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。
The dust and toxic chemicals you bring into your house via your shoes can deteriorate the air quality in your home.
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。
Seawater samples from the area where the seals died did contain unusually high concentrations of the toxic bacterium.
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。
Sue Palmer, writer of Toxic Childhood, is very worried that most girls over the age of three are crazy about the color.
《有毒的童年》的作者苏·帕尔默非常担心，大多数三岁以上的女孩都对这种颜色感到疯狂。
Ragwort contains a battery of toxic and resilient alkaloids: even honey made from its flowers contains the poison in dilute form.
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。
Older production technologies often continue to generate toxic wastes that were not regulated when the technology was first adopted.
较旧的生产技术往往继续产生毒性废物，这些废物在最初采用时没有受到管制。
The toxic substances that fear, anger, frustration and stress produce not only kill guinea pigs but kill us off in a similar manner.
恐惧、愤怒、沮丧和压力产生的有毒物质不仅会杀死豚鼠，还会以类似的方式杀死我们。
A harvest of the shoots would remove the toxic compounds off site to be burned or composted to recover the metal for industrial uses.
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。
While mineral deficiencies can limit the growth of plants, an overabundance of certain minerals can be toxic and can also limit growth.
虽然缺乏矿物质会限制植物的生长，但某些过量的矿物质会使植物中毒，同样会限制植物的生长。
According to Fiona Qian, the firm's deputy manager, the high cost of doing this means some refineries are still dumping toxic waste in landfills.
根据该公司副总经理Fiona Qian 的说法，这种做法成本高说明一些炼油厂仍然在往垃圾掩埋场排放有毒废物。
Toxic chemicals are everywhere in our lives—insect-killing chemicals used on public grass areas, cleaning chemicals on the floors of public areas.
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。
Scientists have now investigated the effects of the spraying of Matacil, one of the anti-budworm agents that is least toxic to insect-pollinators.
科学家们现在已经研究了喷洒灭害威的效果，灭害威是一种抗虫剂，对传粉昆虫的毒性最小。
We can tear apart the great grass cover of the western plains and pour toxic chemicals into the soil until the soil is dead and blows away in the wind.
我们可以把西部平原上覆盖的大片草地撕开，然后把有毒的化学物质倒入土壤中，直到土壤枯死，被风吹走。
In studying these outbreaks, scientists have discovered that affected trees fight back by releasing toxic chemicals, mainly phenols, into their foliage.
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。
As part of her job, she conducted field research on toxic substances in the environment, often in minority communities located near large industrial polluters.
作为工作的一部分，她对环境中的有毒物质进行了实地研究。这些物质通常来源于大型工业污染源附近的少数民族社区。
A 2004 report in the journal Pediatrics explained that nervous parents have more to fear from fire, car accidents and drowning than from toxic chemical exposure.
2004年发表在《儿科》杂志上的一份报告解释说，紧张的父母更害怕的是火灾、车祸和溺水，而不是有毒化学物质泄漏。
Environmentalists and local governments are increasingly concerned about the toxic hazard posed by old electronic devices and the cost of safely recycling those products.
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。
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.
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。
Sherwin's recent experiments with domestic hens do not support the notion that avian social learning necessarily facilitates aversion to novel foods that are noxious or toxic.
Sherwin最近对家养母鸡的实验并不支持这样一种观点，即鸟类的社会学习必然会促使它们对有害或有毒的新食物产生反感。
The developing brain, the report says, is particularly vulnerable to the toxic effects of certain chemicals these products may contain, and the damage they cause can be permanent.
报告说，正在发育的大脑特别容易受到这些产品里可能含有的某些化学物质的毒性影响，而这些化学物质造成的损害可能是永久性的。
Not only are we bring about the extinction of life on a vast scale, we are also making the land, the air and the sea so toxic that the very conditions of life are being destroyed.
我们不仅使生物大规模灭绝，还令陆地、空气和海洋含有巨大毒性，从而使生物的生存条件遭到破坏。
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".
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”。
Not only are we bringing about the extinction of life on a vast scale, we are also making the land and the air and the sea so toxic that the very conditions of life are being destroyed.
我们不仅使生物大规模灭绝，还令陆地、空气和海洋含有巨大毒性，从而使生物的生存条件遭到破坏。
By analyzing the DNA, the genetic material of the proteins, the researchers could focus on the toxic genes and use them to trace the evolution of snake venom, and from this, the evolution of snakes.
通过对DNA 及蛋白质中的基因物质进行分析，研究人员可以专注于有毒基因，并利用它们得到蛇毒的进化轨迹，这样也就知道了蛇的进化源。
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