This approach is also difficult to maintain as the system changes and is hard to drill into.

当系统变化时，这种方式既难维护，也很难深入进去。

youdao

It is also critical that the topology information is live, that it is updated as the system changes.

而且，拓扑信息是活动的(即它随着系统的更改而更新)也非常重要。

youdao

As the system changes over time some level of security should keep up, and even improve if new security holes are discovered.

因为随着时间的推移系统会更改，所以，如果发现新的安全漏洞，应保持甚至提高安全级别。

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President Obama has signed legislation to make the biggest changes in the health care system in forty-five years.

VOA: special.2010.03.24

For several years, many people had recognized the need for changes in the banking system.

VOA: special.2010.09.23

President Obama recently signed into law a bill that changes the student loan system.

VOA: special.2010.04.08

But until the system changes, more hapless NBA teams will take the same approach to teambuilding: crossing their fingers.

WSJ: NBA Draft: Does the NBA Really Need It?

And Medicare is a good place to start because Medicare is such a big purchaser that if we can start changing how the health care system works inside of Medicare, then the entire system changes.

WHITEHOUSE: Town Hall on America��s Fiscal Future

Let's deal with the system, the changes that are necessary for that structure first, then let's say this is how you finance it, then you can say what proportion of the cake is divided up via tax or through various other systems.

BBC: News | BREAKFAST WITH FROST | Conservative Leader, Iain Duncan Smith MP