名詞 roll-over:

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

動(dòng)詞 roll-over:

1. make a rolling motion or turn
   同義詞：roll over
2. negociate to repay a loan at a later date for an additional fee
   同義詞：roll over
3. invest (a previously investment) into a similar fund or security
   同義詞：roll over