They allow the client to validate the token, or request that the valid time span for the token be extended or ended.

它们允许此客户机验证此令牌或者请求延长或终止此令牌的有效时间区间。

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When a valid time stamp is received from a time service provider, the time service will correct itself.

在从时间服务提供商处接收到有效的时间戳时，时间服务将自我校正。

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This paper studies the pricing on Asian geometric average options with fixed strike price at any valid time.

研究了具有固定敲定价格的几何型亚式期权在任意有效时刻的定价问题。

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The courts grant a divorce to mark the end of a marriage that was valid when entered into, whereas an annulment is for a marriage that at no time was valid (as when one of the parties was under the age of consent at the time of the marriage).

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They've set free the coolest technology from behind the locked lab doors at IBM, Xerox and the telephone companies and aft of the machine-gun-equipped guards at America's defense contractors, all of whom had reasons of their own--perfectly valid at the time--to keep the cool stuff from seeing the light of day.

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Their position is that even if the heirs did have valid claims at one time, the heirs agreed to let Warner and DC keep the copyrights in exchange for increased royalty payments and other compensation.

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