Pay more attention to the Valid Time of your VISA, to avoid illegal stay.

请十分注意你所持签证的有效期，以避免非法居留。

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The valid time for the scale was in accordance with the time of diagnosis.

量表评定时间相同于中医辨证诊断时间。

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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.

FORBES: Digital Rules

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.

FORBES: Heirs of Superman Creators Wage Epic Battle With Warner Bros.