On the one hand, it provides opportunities to analyze such ideas as justice,democracy and freedom.
一方面，它提供了分析诸如正义、民主和自由等思想的机会。
"A word is a shadow, "said the shadow, and as such it must speak.
“一个字就是一个影子。”影子说，是因为它必须这样说。
Industrial waste is even more harmful since there are many highly poisonous materials in it, such as copper and lead.
工业废料更有害，因为其中有许多毒性很强的材料，如铜和铅。
It doesn't matter, so long as they're enjoyable, and not likely to have negative side effects, such as drinking too much alcohol or going on a wild spending spree if you're on a tight budget.
这没关系，只要它们是令人愉快的，而且不太可能有负面影响，比如喝酒过量或者在预算紧张的情况下疯狂消费。
It protects against environmental hazards such as wind and sun.
它防范诸如狂风和烈日等环境危害。
Another shortcoming is that it is not applicable to certain very muscular people such as athletes and bodybuilders, who can also have artificially high BMIs.
另一个缺点是它不适用于一些像运动员和健美运动员这样的肌肉发达的人，他们也可以有人为造成的身体质量指数偏高的情况。
It is nearly identical to our own planet and bulk properties such as mass, density, and size.
它几乎与我们自己的行星和体积属性相同，包括质量、密度和大小。
Often the cheapest way to provide irrigation water in the dry tropics is through small-scale projects, such as gathering rainfall in depressions and pumping it to nearby cropland.
在干旱的热带地区，提供灌溉水的最低成本的方法通常是建造小规模的工程。例如，在洼地收集雨水，然后将其抽调至附近的农田。
The other is for protection—and again this isn't as significant as it was once, but hair does still benefit areas of the body such as the head and around the eyes.
另一个作用是保护——这也不像以前那么重要了，但是毛发仍然对身体的某些部位有好处，比如头部和眼睛周围。
This one was chosen because it echoed the labels of groups, such as "Italian Americans" and "Irish Americans", that had already been freed of widespread discrimination.
之所以选择这个名字，是因为它呼应了“意大利裔美国人”和“爱尔兰裔美国人”之类的群体标签，这些群体已经摆脱了普遍的歧视。
It would raise the demand for technologies such as carbon capture and storage, spurring their further development.
这将提高对碳捕捉和储存等技术的需求，进一步刺激其发展。
It also prevents us from engaging in unethical behaviors such as campus violence and academic misconduct that cause negative social impacts.
它也可以防止我们做出造成不良社会影响的不道德行为，如校园暴力和学术不端。
Such media as radio, television and computer have made it possible for advertisers to attract millions of people's attention.
像广播、电视和电脑等媒介使广告商能够吸引数百万人的注意力。
When the Endangered Species Act was signed in 1973, it was expected to protect charismatic fauna such as the bald eagle and Yellowstone's grizzly bears.
当1973年《濒危物种法案》签署时，人们期望它能保护一批引人注目的动物，如秃头鹰和黄石公园的北美灰熊。
Unfortunately, our homes are very attractive to ants, because it provides everything the colony needs to survive, such as food, water, and shelter.
不幸的是，我们家对蚂蚁很有吸引力，因为它提供了蚁群生存所需的一切，如食物、水和遮蔽之处。
It may also occur among totally unrelated forms that compete for the same resource, such as seed-eating rodents and ants.
它也可能发生在完全不相关的、争夺相同资源的组织中，比如以种子为食的啮齿动物和蚂蚁。
The dye can color the wee, and certain foods – such as asparagus – can make it pong.
这种染料会使尿液变黄，一些特定的食物——比如芦笋——会使尿液发出难闻的气味。
Researchers have established that when people are mentally engaged, biochemical changes occur in the brain that allow it to act more effectively in cognitive areas such as attention and memory.
研究人员已经证实，当人们动脑筋时，大脑中会发生生化变化，使其在注意力和记忆等认知区域更有效地发挥作用。
Although researchers have only studied how the FKF1 protein works in the Arabidopsis, they believe that it is the same with many other plants, including crops such as rice and wheat.
尽管研究人员只研究了 FKF1蛋白在拟南芥中是如何工作的，但他们认为它在许多其他植物中也是一样的，包括水稻和小麦等作物。
It follows a specific individual, such as a doctor or nurse, who can use it to record and access patient data.
它遵照某个特定个体的指令，例如医生或护士，他们可以使用它来记录和访问患者数据。
It will draw on both past experience and any other source of information, such as what other people say, to make sense of what it is seeing.
它将利用过去的经验和任何其他信息来源，例如其他人所说的，来理解它所看到的东西。
And it includes alternative schools with students selected by lottery, such as H-B Woodlawn in Arlington, Va.
它还包括学生是通过抽签来选择的其他学校，比如弗吉尼亚州阿灵顿市的 H-B 伍德罗恩高中。
As such, it needed to appreciate the economic realities, the social contexts and power relations in which each epoch stood.
因此，它需要了解每一个时代所处的经济现实和社会背景，以及所牵扯的权力关系。
It has all kinds of styles such as children's bicycles, field bicycles, racing bicycle and so on.
它有各种各样的款式，如儿童自行车、野地自行车、赛车等。
It is often hard for them to find food, so some animals such as mice collect extra food before winter and hide it.
它们通常很难觅食，所以一些动物会在冬天来临前收集额外的食物并储藏起来，例如老鼠。
Where previously it had concentrated on the big infrastructure projects such as dams, roads and bridges, it began to switch to projects which directly improved the basic services of a country.
以前的重心是大坝、道路和桥梁等大型基础设施项目，现在开始转向直接改善国家基础服务的项目。
We should assure such students that risk, and even peer pressure, can be a good thing—as long as it happens in the classroom and not the car.
我们应该向此类学生保证，风险，甚至同龄人的压力都可能会成为一件好事——只要它发生在教室里，而非汽车里。
We should assure such students that risk, and even peer pressure, can be a good thing—as long as it happens in the classroom and not in the car.
我们应该向这些学生保证，风险甚至来自同辈的压力，都是一件好事——只要它发生在教室里，而不是在车上。
It can be hard to identify which parcels are carrying crucial items such as Social Security checks, but USPS and UPS try their best to prioritize sensitive material.
虽然很难辨别哪些包裹里装的是社会保障支票等重要物品，但美国邮政（USPS）和联合包裹服务公司（UPS）会尽其所能优先处理敏感材料。
The system login uses information such as source ID (SID), domain and system user name for authentication, so it is considered secure.
系统登录会使用到诸如源ID（安全识别符），域和系统用户名等信息进行身份验证，因此被认为是安全的。
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