In usual materials, one finds an inverse relation between the two properties, whereas for many practical applications simultaneous presence of both properties is desirable.
在通常的材料中，人们会发现这两种性质之间的反比关系，而在许多实际应用中，同时存在这两种性质是可取的。
There are two international airports in the city, and many main roads meet here, Milan is also one of the cultures centers in Italy.
米兰有两个国际机场，许多主要道路在这里交汇，米兰也是意大利的文化中心之一。
Bailyn's third proposition suggests two general patterns prevailing among the many thousands of migrants: one group came as indentured servants, another came to acquire land.
贝林的第三个主张提出了在成千上万的移民中普遍存在的两种模式：一种是契约仆役，另一种是为了获得土地。
That's why we always try to have at least two guides, one Israeli and one Palestinian, plus many local guides all along the way.
这也是为什么我们总是安排至少两个导游，一个以色列的一个巴勒斯坦的，另外沿途还有许多当地导游。
In many companies, this is split into two roles: one responsible for hardware and operating systems and another responsible for administering applications.
在许多公司中，该角色分为两个：一个负责硬件和操作系统，而另一个负责管理应用程序。
Many small group or division portals are set up on one, or maybe two, servers, and these are valid options.
多个小组或者部门门户可以建立在一个服务器或者两个服务器上，这些选择都是合理的。
If you need speed, there may be only one or two ways to achieve the fastest results, whereas there are many slower alternatives.
如果您需要很快的速度，不管有多少种慢速的方法，但是可能只有一两种方法可以达到最快的结果。
So we have one mistake, one pronunciation that is common to many English accents, and two or three pronunciations that are markedly Hispanic, but hardly impossible to understand.
因此，这里只有一个错误，它是一个好多英语口音里都常见的发音，有两三个明显是西班牙裔美国人的发音，但也不是听不懂。
Organizations tend to believe that one method is better than the other, but in many cases the two methods can exist side by side.
组织趋向于相信某个方法比另一个方法好，但在很多情况下两个方法可以同时使用。
The American Dietetic Association suggests substituting two egg whites for one whole egg in many recipes.
美国餐饮协会在许多食谱中建议用两个蛋白替代一个全蛋。
The effort to preserve a wide variety of plant genes in Banks is particularly urgent because many farms now grow just one or two crops.
维护各种各样的植物基因的各项努力显得格外紧急，因为现在许多农场只生长一种或两种作物。
Most soldiers spent just one or two assignments in Vietnam, but many American soldiers and Marines are on their third or fourth tours in Iraq and Afghanistan.
在越战中，大多数士兵只执行一到两次任务，可是在伊拉克和阿富汗的战场上，很多美国陆军海军已经执行了三或四次任务。
For instance, China has 60,000 out-of-home advertising firms, many of them microbusinesses with one or two signs, and is clearly ripe for rationalisation.
例如中国有60,000家户外广告公司，其中许多微型公司只有一个或两个标识，很明显，中国户外广告公司的合理话整合机会已经成熟了。
While the two technologies have many similarities, one key difference is the runtime infrastructure they require.
尽管这两种技术有许多相似性，但关键的一点差异是它们需要的运行时基础设施。
Because many social networks eventually evolve into one of just two states.
因为很多社会网络最终演变成两种态势。
The trophy itself consists of the Cup and two base plates, one recording the results of the many games and the other recording the two captains.
奖杯有两个基座，一个纪录着多年以来比赛的结果，一个刻有两队队长的名字。
I was thinking 'he's got too many legs' and I kept counting 'one, two, three, four, '" Janaway said.
我当时就想‘这家伙一定是多长了几条腿’，于是我就开始数啊数，一、二、三、四。
"We outsell them by two to one." he points out, legitimately, that many phones using Microsoft Mobile software have long had both GPS and 3g, and have always tied into corporate computer systems.
“我们卖的是他们的二倍到一倍”，他指出，使用微软手机软件的手机早就能拥有GPS和3g功能，而且还能和电脑相互协作。
Unlike us (who only have one child), many 'sea turtles' have two or three kids and some also need a bilingual daycare center.
不像我们（只有一个孩子），有些“海龟”有两个或三个孩子，一些还需要会提供两种语言服务的日常照料中心。”
Microsoft says it will end support for XP and Office 2003 — the one-two computing punch in many an office across America — by April 2014.
微软声称将会在2014年四月终止对XP和Office 2003的支持 -美国许多办公室都是成套使用它们。
After only one or two trials, many bees learned to stick out their tonguelike proboscis in anticipation of a sugary droplet.
经过短短的一两个试验，许多蜜蜂已经学会在期盼已久的含糖微滴前吐出舌样长鼻。
The upside: One English muffin — two halves — has half as many calories as two slices of bread. So it \ \ \ 's better for a breakfast sandwich.
好处：一块英式松饼(一块包括上下两半)约含有两片面包一半的热量，所以它更适合做成早餐三文治。
Many programmers are fluent in multiple languages but tend to have one or two they're most comfortable with.
许多程序员熟悉多种语言，但是往往有一两种是他们用起来最舒服的。
I see one major advantage in this two-step approach, namely that XSLT is a standard with many choices.
我注意到这种两步骤方法中有一个主要优点，即XSLT是一个具有许多选项的标准。
How many of our models will last nearly 1500 years, let alone one or two versions of an application?
有多少模型能够使用近1500年，更不用说应用程序的一个或两个版本了？
Many a Nobel laureate built his reputation on one or two great papers, and then spent several decades producing nothing new.
许多诺贝尔奖获得者依靠一两篇论文建立声誉，接着在数十年时间里拿不出任何新东西。
An order split between the two competitors is a possible compromise-one that many of the world's airlines, which benefit greatly from playing one firm off against the other, might sympathise with.
最后可能的折衷是将订单一分为二分给波音和空客-那些通过打压两家公司中的一家而从另一家获得巨大好处的航空公司会对这项决定感到惋惜。
Many were quite old, one or two were middle-aged men, some were older women, some housewives.
不少同学都相当老。只有一两个中年男人，剩下就是些上年纪的女人和家庭主妇。
Many were quite old, one or two were middle-aged men, some were older women, some housewives.
不少同学都相当老。只有一两个中年男人，剩下就是些上年纪的女人和家庭主妇。
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