宽限期

kuān xiàn qī yī guò hé tóng jí zhōng zhǐ

宽限期一过，合同即终止。

When the grace period expires, the contract is annulled.

shàng shù zhài quàn lì xī zhī fù de kuān xiàn qī jié zhì zhōu sān

上述债券利息支付的宽限期截至周三。

The grace period for payment of those bonds ends Wednesday.