permanent change

Permanent change, the mind has a right to feel nostalgic autumn.

永久不变的，心中多了一份对秋的眷念。

Methylation causes a permanent change in gene activity during development.

在发育过程中甲基化导致了基因功能的永久改变.

But those firms would experience no permanent change in their competitive status.

然而,在竞争状况方面,这些企业不会发生一劳永逸地改变.

The big question is whether these are passing trends, or augur more permanent change.

关键问题是,上述现象究竟是一时的势态, 还是预示着更为长久的变化.

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。

This ensures that a successful transaction is reflected as a permanent change to a database and survives hardware and software errors.

这确保了将成功的事务反映为对数据库的持久更改，并在硬件和软件错误时也能继续存在。

Using an option that is easy to implement and maintain, you can change the display language by clicking a button without making a permanent change to the user profile.

通过使用一种易于实现和维护的选择，您可以通过点击按钮来更改显示语言，而不需要对用户概要文件进行永久性的更改。