Etymologically speaking they're all in the wrong  order.

从词源学上来说，它们的顺序都是错误的。

But etymologically speaking, you can forget it!

但从词源学上来说，你可以忘记它！

So a sergeant major is, etymologically speaker,   just a greater - or more important - servant.

因此，从词源上讲，军士长只是一个更大或更重要的仆人。

The older of the two comes from the word 'thrive' etymologically, and described thrift as the ability to live well and to flourish, so it's that sense of human flourishing.

其中较老的定义从词源学上讲源自" 繁荣" 这个词，并形容" 勤俭" 为生活得好以及繁荣昌盛的能力，所以它就是人类繁荣昌盛的意思。