Our offer is valid for seven days from today, and will then be subject to change according to the market price of the day.

我方的报盘自今日起一周内有效，以后可按每日市价变动／随行就市。

youdao

The Certification Formula is valid for three years starting from the day it is issued by the taxation authority.

证明表自主管税务机关签发之日起三年内有效。

youdao

This certification is valid from (Month) (Day) (Year) to (Month) (Day) (Year).

本证明表自年月日至年月日有效。

youdao

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