名詞 rollover:

1. the act of changing the institution that invests your pension plan without incurring a tax penalty

roll.o.ver

n.（名詞）
The act or process of rolling over.
滾翻的行為或過程
An accident in which a motor vehicle overturns.
一種汽車傾翻的翻車事故
Economics Reinvestment of profits received from one often short-term security into another, similar security:
【經(jīng)濟學】 再投資：把從短期證券得來的利潤重新投入另一類似證券的做法：
例句：
an IRA rollover.
個人退休金帳戶的再投資