evolves是什么意思

As medical knowledge evolves, beliefs change

随着医学知识的逐步发展，观念也在发生变化。

Though the term trend may be used interchangeably with fad, a fad is generally considered a fleeting4 behavior whereas a trend is considered to be a behavior that evolves into a relatively5 permanent change. ( Source: Wikipedia)

虽然trend（潮流、趋势）一词可与fad互用，不过，fad通常指转瞬即逝的行为，而trend多指能够带来永久改变的一些趋势和行为。

Many applications will continuously produce large amounts of sequential data which evolves along with time to form time-series data streams, such as sensor networks, real-time stock quotes, networking and communications monitoring and other occasions.

许多应用中会连续不断产生大量随时间演变的序列型数据，构成时间序列数据流，如传感器网络、实时股票行情、网络及通信监控等场合。