As they began to settle, grow plants and herd animals, the need for a sophisticated number system became paramount.
当他们开始定居、种植作物和饲养动物时，他们对复杂数字系统的需求变大。
In poor societies, people have children to improve their economic well-being by increasing the number of family workers and providing support for parents in their old age.
在贫穷的社会里，人们要孩子是为了通过增加家庭工作人员的数量和在他们年老的时候为父母提供支持，改善他们的经济状况。
A number of countries are already in the process of formulating their own standards for the control and reduction of classroom noise.
一些国家已经在着手制定本国关于控制和减少教室噪音的标准。
In recent years, a growing body of research has shown that our appetite and food intake are influenced by a large number of other factors besides our biological need for energy.
近年来，越来越多的研究表明，我们的食欲和食物摄入量除了受对能量的生理需求影响外，还受到许多其他因素的影响。
In recent years, a growing body of research has shown that our appetite and food intake are influenced by a large number of other factors besides our biological need for energy
近年来，越来越多的研究表明，我们的食欲和食物摄入量除了受对能量的生理需求影响外，还受到许多其他因素的影响。
Most number systems, then, are the by-product of two key factors: the human capacity for language and our inclination for focusing on our hands and fingers.
因此，大多数数字系统都是两个关键因素的意外结果：人类的语言能力及我们对手和手指的关注倾向。
A number of companies have sprung up—GamEffective, Bunchball and Badgeville, to name a few— in recent years offering gamification platforms for businesses.
近年来，许多为企业提供游戏化平台的公司纷纷涌现，如Gameffective、Bunchball和Badgeville 等。
A number of companies have sprung up—GamEffective, Bunchball and Badgeville, to name a few—in recent years offering gamification platforms for businesses.
近年来，许多为企业提供游戏化平台的公司纷纷涌现，例如，GamEffective、Bunchball和Badgeville 等。
For example, the number 7 would flash on one side of the screen and the other end would have 9 and 8.
例如，数字7会在屏幕的一侧闪过，另一端会出现9和8。
For an increasing number of kids, the extra time and money spent pursuing a college diploma will leave them worse off than they were before they set foot on campus.
对于越来越多的孩子来说，为了追求一张大学文凭而额外花费在学习上的时间和金钱会使他们的情况变得比踏入校园前更糟。
And a number of oil-producing countries are trimming their gasoline subsidies and raising taxes, so the net savings for global consumers is not as big as the oil price plunge might suggest.
许多产油国正在削减汽油补贴并提高税收，因此全球消费者的净储蓄并不像油价暴跌可能显示的那样大。
So the figures for the growth of towns and cities represent proportional growth of unemployment and underemployment, a growing in the number of hopeless and despairing parents and starving children.
因此，城镇（人口）的增长数字意味着失业和未充分就业的情况成比例增长，以及绝望的父母和挨饿的孩子的人数增长。
A number of oil-producing countries are trimming their gasoline subsidies and raising taxes, so the net savings for global consumers is not as big as the oil price plunge might suggest.
许多产油国正在削减汽油补贴并提高税收，由此，全球消费者的净储蓄就不会像油价暴跌所预示的那样多了。
In arid and semiarid regions, on the other hand, the small number of lakes and the great distances between them reduce the possibilities for correlation.
另一方面，在干旱和半干旱地区，湖泊数量少，湖泊之间距离远，减少了相互关联的可能性。
Netball hands cast various difficult tricky problems for the ball, and it is up to you in a specified time to make the number of home base.
投球手会投出各种难度刁钻的球，看你在规定时间内能打出多少本垒。
The band is labeled with a tracking number, and there is a phone number on the band for people to call for free, to report a banded bird they've found or recaptured.
这只手环上有一个追踪号码，还有一个人们可以免费拨打的电话号码，举报他们发现或捕获的标记雀鸟。
Soon afterward, the Federal government drastically cut down its expenditures for this purpose and later abolished them, causing a sharp drop in the number of nursery schools in operation.
很快，联邦政府就彻底地切断了用于此类目的的开销，后来直接取消了这项开支，这导致了营业中的托儿所数量锐减。
Later ancestors lived on land and stayed there for a very large number of generations.
后来的祖先生活在陆地上，并在那里居住了一代又一代。
They hope to reduce both the number of components needed in a construction job and their weight—by replacing solid supports with hollow tubes, for example.
他们希望减少建筑工作所需的部件数量和重量，例如，用空心管代替实心支架。
After I moved to Tokyo and lived there for a number of years, I got used to having a pile of to-do lists, and my calendar always looked like a mess, with loads of things to do written across it.
当我搬到东京并在那里住了几年之后，我习惯了列一堆待办事项清单，而且我的日程表看起来总是乱糟糟的，上面写满了要做的事情。
Five minutes after that, we placed either bacon or bread on the surface for 5, 30 or 60 seconds, and then measured the number of bacteria transferred to the food.
五分钟后，我们将培根或面包放在表面5秒、30秒或60秒，然后检测转移到食物上的细菌数量。
There are a number of vitamins that are vital for good hair health, the main ones being vitamins C, D and E, and in a balanced diet all these vitamins should be readily available.
有许多对头发健康至关重要的维生素，主要有维生素C、D和E，而在平衡的饮食中所有这些维生素应该很容易获得。
The university has a huge number of buildings for teaching and research.
这所大学有很多用于教学和科研的建筑物。
It often happens that a number of applicants with almost identical qualifications and experience all apply for the same position.
经常会发生这样的情况：许多申请者拥有几乎相同的资格和经验，却同时申请同一个职位。
That's because there are a number of powerful voice manipulation and automation technologies that are about to become widely available for anyone to use.
这是因为有许多强大的语音操作和自动化技术即将被普及，任何人都可以使用。
Miss Rottenmeier followed her and tried to call her back, for she wanted to ask Deta a number of questions.
罗特麦耶小姐跟在她后面，想要叫她回来，因为她想问迪蒂几个问题。
Today the number of the Arctic foxes is becoming smaller and smaller, because people kill them for their fur to make beautiful coats for money.
今天，北极狐的数量变得越来越少，因为人们杀死它们来得到它们的毛皮，以制造漂亮的外套换取金钱。
Italy has for some years been the second biggest source of migrants, and the Australians have also managed to attract a large number of Greeks and Germans.
意大利多年来一直是第二大移民来源国，澳大利亚也设法吸引了大量的希腊人和德国人。
The figures for the growth of towns and cities represent proportional growth of unemployment and underemployment, a growth in the number of hopeless and despairing parents and starving children.
城镇（人口）的增长数字意味着失业和未充分就业的情况成比例增长，绝望父母和挨饿孩子的人数也增长了。
The figures for the growth of towns and cities represent proportional growth of unemployment and underemployment, a growth in the number of hopeless and despairing parents and starving children.
城镇（人口）的增长数字意味着失业和未充分就业的情况成比例增长，绝望父母和挨饿孩子的人数也增长了。
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