流感病毒是恶名昭著的，它变化迅速、行为叵测。

Influenza viruses are notorious for their rapid mutation and unpredictable behaviour.

youdao

本质上，图书馆是最能适应，变化迅速，并建立在过去成功基础上的。

As in nature, libraries had best adapt, change quickly, and build on past successes.

youdao

很少有事物像技术那样变化迅速，而Web技术的变化速度似乎更快。

Few things change as quickly as technology, and Web technology seems to change faster still.

youdao

So during the past 10 years, the market actually changed very quickly, very dramatically.

在过去的十年中，市场变化极其迅速。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

It's growing very, very quickly, much faster than the world average.

变化非常迅速，比世界平均速度更快。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

Now, in any society changing this much, this fast, doubling its own population--doubling--in twenty-five years.

现在,在任何变化如此巨大的社会,如此迅速地,在二十五年内,人口增至两倍

耶鲁公开课 - 美国内战与重建课程节选