常見例句雙語例句Efficient-market theory, which states that prices already reflect all available information, presents an immediate problem for the idea of a reversion to the mean.有傚市場理論認爲價格已反映了全部可獲信息，它對廻歸均值觀點産生了一個直接的質疑。ecocn.org 返回 immediate reversion