If the property is not found, or is expired, the application has to call the backend to get the property, save it to EPPS, and then return the property.

如果没有发现该属性，或者已经过期了，应用程序不得不调用后端来获取属性，把它保存到EPPS，并且返回该属性。

youdao

The copyright may have expired, but the property rights have not.

版权或许已经过期，但产权却依然有效。

youdao

S. property bubble burst in 2007 for the teasers in the subprime mortgages expired and speculators couldn't cough up the necessitated money.

美国的房地产泡沫于2007年由于“次级抵押贷款”玩过了头而破灭，而投机者已经无力再去提供更多的资金。

youdao

The property became available when the claim to the mine expired and a prospector offered it to them, Patton said.

FORBES: INTERVIEW: Full Speed Ahead On Yerington Copper Mine -- Quaterra CEO