我们能源系统的主要组成部分，如燃料生产、提炼、发电和分配，用的是昂贵的、使用寿命较长的装置。
The major components of our energy systems, such as fuel production, refining, electrical generation and distribution, are costly installation that have lengthy life span.
害虫通常以特定的树种为目标，一旦形成，它们通常会成为生态系统的永久组成部分。
Pests often target specific tree species and, if they become established, they usually remain as permanent components of the ecosystem.
"热带稀树草原位于热带地区，海拔较低，是一种稳定的生态系统，由广阔的草地和稀疏分布其中的树木或灌木组成，有些地区湿润，有些地区干燥。
Located in tropical areas at low altitudes, savannas are stable ecosystems, some wet and some dry consisting of vast grasslands with scattered trees or shrubs.
可以说，生态系统的特性要比组成生态系统的单个生物体性质更加稳定。
We can say that the properties of an ecosystem are more stable than the individual organisms that compose the ecosystem.
由于树种具有不同的、往往是独特的特性，森林物种组成的变化以多种方式影响着生态系统。
Shifts in forest species composition ramify through the ecosystem in many ways because tree species have different, often unique properties.
那是因为红灯不是这一符号系统的一个主要组成单元，对吗？
That's because the red light is actually not a gross constituent unit in a semiotic system, right?
太阳是一个巨大的旋转系统的中心，这个旋转系统由九大行星、它们的卫星和无数的小天体组成，包括小行星、彗星和流星体。
The Sun is the hub of a huge rotating system consisting of nine planets, their satellites, and numerous small bodies, including asteroids, comets, and meteoroids.
海豚没有声带，但却能发声：一个由口哨声、吱吱声、呻吟声、颤音和咔嚓声组成的复杂系统是由喷水孔内的括约肌产生的。
Dolphins lack vocal cords, nevertheless creating sounds: a complicated system of whistles, squeaks, moans, trills, and clicks are produced by sphincter muscles inside the blowhole.
拥有庞大的系统是径流渠道的流动特征——有时总长达数百公里——这些系统由蜿蜒交错的渠道组成，而且这些渠道可能会并入更长更宽的渠道。
These flow features are extensive systems—sometimes hundreds of kilometers in total length—of interconnecting, twisting channels that seem to merge into larger, wider channels.
许多人认为，空中交通管制系统是由一排坐在美国机场雷达屏幕前的管制员组成的，他们告诉到达和离开的航班该做什么。
Many people think that ATC consists of a row of controllers sitting in front of their radar screens at the nation's airports, telling arriving and departing traffic what to do.
它仍然是中国交通系统的重要组成部分。
It's still an important part of the transport system in China.
它根据系统负载的各个组成使用公式进行计算。
It is a formulaic calculation based on various components of system load.
但是ZFS不只是组成有用文件系统的功能集合。
But ZFS isn't just a collection of features that make up a useful file system.
人类由非常复杂的进化系统组成。
无线系统的组成部分是什么？
这仅仅包括业务功能、由底层功能组成的业务事务和系统服务功能。
This includes purely business functions, business transactions composed of lower-level functions, and system service functions.
在任何系统中，身份验证都是最重要的组成部分之一。
Authentication is one of the most crucial modules for any given system.
最常见的分区环境由每个物理系统上的一个数据库分区组成，这些物理系统组成数据库分区集群。
The most common partitioned environment consists of a single database partition on each physical system that makes up the database partition cluster.
一个拓扑表达一个IT系统可能与描述这个系统的组成一样简单。
A topology expressing an IT system may be as simple as describing a component of the system.
当考虑到互连系统时，这对建立由较小互连系统组成的大系统有意义。
When you think about it, it makes sense to build large systems made up of smaller interconnected systems.
一个可用系统是由一组系统级共享资源组成的系统，共同合作提供重要服务。
An available system is one that comprises a set of system-wide, Shared resources that cooperate to provide essential services.
它们都是加强卫生系统和重振初级卫生保健议程的组成部分。
Both are part of the agenda for strengthening health systems and revitalizing primary health care.
RUP的测试建议由单元测试、整合测试、系统测试和试点测试组成。
RUP's testing recommendations comprise unit testing, integration testing, system testing, and pilot testing.
轻量级的组成成分是不能证明代码可以在企业级系统里运行的。
No amount of lightweight components will help you prove that your code will run on enterprise systems.
创建或获得一个不属于系统组成员的用户帐户。
Create or get a user account that is not a member of system group.
地球是一个由不同成分组成的动态系统。
事件驱动的系统由事件生产者和事件接收者组成。
An event-driven system consists of event producers and event receivers.
内容存储库应该由独自的文件系统组成。
经过良好设计的系统，其质量也要比通过代码补丁拼凑在一起而组成的系统高得多。
The quality of a well-architected system is also much higher than one that was just slapped together with patches of code.
经过良好设计的系统，其质量也要比通过代码补丁拼凑在一起而组成的系统高得多。
The quality of a well-architected system is also much higher than one that was just slapped together with patches of code.
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