economic index的用法和樣例：
例句
- Then, in an attempt to broaden dialogue, the paper adopts a focus on wealth creation and uses a number of simple economic indices to elucidate the role of engineering.
然后，為了拓寬對話(huà)，本文聚焦于財富的創(chuàng )造，并運用了一系列簡(jiǎn)單的經(jīng)濟指數以闡明工程技術(shù)的作用。
