grace period

grace-period的词性：
n.（名词）

1. A period in which a debt may be paid without accruing further interest or penalty.
宽限期：一段时间，在此期间偿还债务不用追加进一步的利息或惩罚

2. A period in which an insurance policy is effective even though the premium is past due.
宽限期：一段时间，在此期间即使保险费已超过期限，保险单仍然有效