但是，这个过程并非始终不变。

This process, however, was not invariable.

youdao

成功之秘诀，在始终不变其目的。

Thee secret of success, in constant purpose.

youdao

不管阴晴圆缺，我对你的爱始终不变。

Waxing, regardless of rain or shine my love for you is always the same.

youdao

There's always, and I think this is nearly invariable -there's an element in Milton's similes that stands outside the framework of the basic comparison.

有一点是时常出现并且几乎不变的,-就是在弥尔顿的明喻中始终有一个元素,是从基本的对比框架中脱颖而出的。

耶鲁公开课 - 弥尔顿课程节选

There's one quantity that's going to come out the same, no matter who is looking at the vector.

但是也有一个量是始终不变的,不管是谁在观察这个矢量

耶鲁公开课 - 基础物理课程节选