stock price index的用法和樣例：
例句
- Deflation is the division of a value variable by an appropriate price index so as to obtain a quantity variable.
減縮是價(jià)值變量除以適當的價(jià)格指數以獲得數量變量。 - The official price index may understate the true average gain but figures for central Shanghai will overstate it.
官方價(jià)格指數也許低估真實(shí)的平均收益，而對于上海中心區的數據則有些高估了。
