written authorization

基本解释

Nobody else has that privilege without the owner's explicit written authorization.
不经专利人的明确书面授权，任何人都不得实施这项专利。
XIII. The contract shall go into force after the signature of both parties. Alteration or signature without written authorization is invalid.
本合同自甲、乙双方签字或盖章之日起生效，涂改或未经书面授权代签无效。
You agree not to distribute any part of the Website without Jibo's written authorization, unless Jibo. cn allows and provides means for such distribution through the Website.
您同意在没有集博健康的书面授权下，不散布网站的任何内容。除非集博健康允许并通过该网站提供散布的方式。

On the one hand, sure — without any doubt — registered persons should not accept account instructions from a spouse absent prior written authorization.
FORBES: Husband's Unauthorized Withdrawals Land Stockbroker In Hot Water
No registered person should ever initial or sign on behalf of a customer without first securing prior written authorization from both the employer firm and the customer.
FORBES: Former Chase Broker Initials And Signs His Way Out Of A Job