" Until" specifies a certain period of time when something can (or cannot) happen unless something else happens.

“Until”指定某段时间，除非发生其他事情，否则某些事情可以（或不能）发生。

Well, we offer 60-day or 90-day loans. The balance of the loan is to be repaid in full by the end of the specified period.

嗯，我们提供60天或90天的贷款。贷款余额需要在指定期限的截止曰期全部还清。

" To mature, " here, means for a financial arrangement to reach the end of a specified or agreed period.

“成熟”在这里是指财务安排达到指定或约定期限的结束。

For a specified period of time, we ask them to stop driving, swimming, going alone on heights or playing video games or watching television for long times.

在一段特定的时间内，我们要求他们停止开车、游泳、单独登高、玩电子游戏或长时间看电视。

It is used most commonly in the present perfect tense in English, when talking about something in the past but without any specified period of time.

它在英语中最常用于现在完成时， 当谈论过去的某事但没有任何特定的时间段时。

It's used in a sentence to specify a period of time when something is going on at the same time as something else in the sentence.

它在句子中用于指定某件事与句子中的其他事情同时发生的时间段。

On the contrary, the mere definition of the rate of interest tells us in so many words that the rate of interest is the reward for parting with liquidity for a specified period.

相反，仅仅利率的定义就用很多话告诉我们，利率是在特定时期内放弃流动性的回报。

Similar campaigns have been introduced before, such as a controversial special package called " Wild Your Weekends" that allowed passengers to book an unlimited number of domestic flights to most cities in the Chinese mainland within a specified period.

此前也推出过类似的活动，比如颇具争议的“周末狂野” 特惠套餐，允许乘客在指定时间内无限次预订飞往中国大陆大部分城市的国内航班。