It has no maturity date.

该债券没有到期日。

They have a maturity date of infinity.

股票具有无限的到期日。

Can they be cashed before the maturity date?

它们能否在到期之前兑现？

You shouldn't withdraw your funds before maturity date.

您不该在到期日前提取存款。

Client: Can I take out the money before the maturity date?

客户：我可以在存款到期前取款吗？