但是，随之而来的是何时开始计数的问题，因此，在14世纪早期，一些系统发生了变化。
With these, however, arose the question of when to begin counting, and so, in the early 14th century, a number of systems evolved.
稀稀落落的常住人口和休闲活动（尤其是滑雪）的发展，导致当地生态系统发生了重大的长期变化。
A thinly scattered permanent population and development of leisure activities, particularly skiing, have resulted in significant long-term changes to the local ecosystems.
输出是一个表征图而不是系统发生图。
企业无法承受这些遗留系统发生任何中断。
An enterprise cannot afford any disruption in these legacy systems.
这让数据的每个消费者都和遗留系统发生了紧耦合。
This tightly couples the legacy system with every consumer of the data.
作为回报，他的工资也逐渐上升，一天计算机系统发生故障。
In return, his salary worked up. One day, the computer system went wrong.
热备份的主要好处是能够及时还原到系统发生故障的时间点。
The main gain of hot backup is the ability to recover to the point in time where the system last became unavailable.
上周二上海地铁系统发生列车撞车事故，造成284人受伤。
A train crash on the Shanghai subway system left 284 people injured last Tuesday.
此时系统发生反应。它处理输入并将处理的结果返回给用户。
Then the system reacts; i.e., it processes the input and returns the result to the Actor.
病毒感染导致免疫系统发生进行性衰退，最后出现“免疫缺陷”。
Infection with the virus results in the progressive deterioration of the immune system, leading to "immune deficiency."
一旦压缩空气系统发生故障，将造成生产线停车，涂装质量恶化。
Once the compressed air system problem will cause production line parking, coating quality deterioration.
问题在于当系统发生崩溃时，数据将会丢失，因为数据保存在内存中。
The issue is that where a system crash occurs, the data would be lost, as it is in memory.
持久化的消息则会把消息写入磁盘，即便系统发生故障也可找回消息，但相应的处理速度较慢。
Persistent messages are written to disk and are therefore recoverable in the event of a system failure, but are correspondingly slow.
但是几天后，也就是探路者号开始收集气象数据不久，整个系统发生了重启，每次重启都导致数据丢失。
But a few days into the mission, not long after Pathfinder started gathering meteorological data, the spacecraft began experiencing total system resets, each resulting in losses of data.
如果在已写入第一个磁盘块之后，在写入第二个磁盘块之前，系统发生故障，又会发生什么情况呢？
What if the system fails after the first one is written, but before the second?
显然，您绝不希望系统发生崩溃，但如果的确出现了这种情况，那么不希望这是由于系统管理员的疏忽造成的。
Obviously, you never want your system to crash but, if it does, you don't want it to be anything you did as the systems administrator.
1492年之后，在欧洲的轮船携带数千物种跨越大洋到达新家之时，这个世界的生态系统发生了碰撞并融合。
After 1492, the world's ecosystems collided and mixed as European vessels carried thousands of species to new homes across the oceans.
在检查点之间的事务被写入到一个事务日志中，并且，如果系统发生崩溃，事务将从事务日志中恢复。
Between checkpoints, transactions are written to a transaction log and, if the system crashes, transactions are recovered from the transaction log.
目的：了解临床支持系统发生风险事件的种类和多发区，并分析原因，防范临床支持系统发生风险事件。
Objective Research on the type & frequently-occur ring aspect of risk incidents in clinical supporting system and prevent reasons in risk incidents.
一旦系统发生崩溃，日志文件就会起到一个检查点的作用，用于恢复未保存的信息，防止损坏文件系统元数据。
If a crash occurs, the journal can be used as a checkpoint to recover unsaved information and avoid corrupting file system metadata.
(毕竟，来宾操作系统发生的错误仅会停止该系统，而不会影响hypervisor或其他来宾操作系统)。
After all, a fault in a guest should halt the guest but not the hypervisor or other guests.
在完成ASP.NETHTTP运行时之旅前，一起来分析一下当一个ASP.NET页面请求时文件系统发生了什么。
To finish off the tour of the ASP.NET HTTP runtime, let's analyze what happens at the file system level when an ASP.NET page is requested.
他特别提醒人们不要一开始就通过整日禁食或净化来减肥，因为这样似乎会激发免疫系统发生重大变化，从而抵抗减肥。
He particularly cautions against beginning a diet with a fast or cleansing day, which appears to trigger significant alterations in the immune system that work against weight loss.
无影篱笆是一个品牌的名字，这是一套独特的系统，售价在1500-2000美元之间，请不要与那种DIY的宠物隔离系统发生混淆。
A typical system from Invisible Fencing, which is a brand name and not to be confused with do-it-yourself pet containment systems, costs $1, 500 to $2, 000.
美国东部时间商务7点24分，航天飞机项目管理人员作出了该决定，原因是因为在外部燃料箱加注燃料时，一个燃料传感器系统发生了故障。
Shuttle program managers made the decision at 7:24 a.m. EST after a failure occurred in a fuel sensor system while Atlantis' external fuel tank was being filled.
这些物种在其所处的小型生态系统中可能发挥着关键性的作用，一旦消失，即使还有许多相关的物种，也会导致整个生态系统发生改变。
Such species may be key to the survival of their small ecosystem and their loss, even among many related species, can alter an entire ecosystem.
早在克拉科夫大学读书期间，他就着手研究这种物质，当时曾认为或许可以用它们来合成染料，伹也一直猜想它们可能会与人类中枢神经系统发生作用。
At the time, he had thought he might make synthetic dyes with them. But he had always suspected they might interact with the central nervous system of human beings.
很显然，您并不希望系统发生崩溃，但如果的确出现了这种情况，那么您将希望这是由于硬件故障造成的、而与您的操作无关，或者由于系统管理员的疏忽造成。
Obviously, you never want your system to crash but, if it does, you want it to be due to a hardware failure and nothing that you did or forgot to do as the systems administrator.
在覆盖电池板的玻璃或塑料片上沉积一种电敏透明材料，传感器监测灰尘等级，当灰尘达到额定等级时，系统发生作用，利用电池板所发电流产生一个电荷。
An electrically-sensitive transparent material is deposited on glass or a plastic sheet that covers the panel. Sensors monitor the dust levels.
在图2 中，可以看到ActiveMQRA通过已定义好的JCA 1.5系统契约与Geronimo 的安全和事物处理系统发生的交互。
In Figure 2, you can see that the ActiveMQ RA interacts with Geronimo’s security and transaction system through well-defined JCA 1.5 system contracts.
应用推荐