securities investment funds的用法和樣例：
例句
- It is an important matter that performance of security investment funds is appraised in moden finance.
對證券投資基金的績(jì)效評估一直是現代金融理論的一個(gè)重要問(wèn)題。 - And after 7-year development, the security investment funds have gradually grown into maturation from infantilism.
經(jīng)過(guò)七年的努力，證券投資基金經(jīng)歷了從無(wú)到有，從單一到多樣，從幼稚到成熟的發(fā)展過(guò)程。
