stock returns的用法和樣例：
例句
- Others hesitate to report their true profits, for fear of a potential tax collection on their stock incomes.
還有一些人不願意透露他們的財產，擔心會被徵收股票收益稅。 - This paper develops a trinomial option pricing model that incorporates the first four moments of the stock return distribution.
提出了一個將股票收益分佈的頭四個動差結合起來的三項式期權定價模型。
