I ought first to have asked your consent.

我本应该首先征得你的同意。

《新英汉大辞典》

youdao

Without either of your consent.

未经你俩任何人的同意。

youdao

On the one hand, he says the government can't take your property without your consent.

一方面，他说,未经你同意，政府不能取走你的财产。

耶鲁公开课 - 公正课程节选

You want to withdraw your consent and return to the state of nature.

想收回你的同意，转而回到自然状态。

耶鲁公开课 - 公正课程节选

However Facebook and other sites are constantly changing the rules about how much you can protect your content, and your friends can forward embarrassing pictures of you without your consent.

FORBES: 6 Steps To Managing Your Online Reputation

However, if we wish to combine your personal and cookie or click stream information in this manner, we will obtain your express affirmative consent.

NEWSWEEK: Privacy Policy

If a user ceases to consent or affirmatively revokes consent for Your collection, use or disclosure of his or her user or device data, You must promptly cease all such use.

FORBES: Congress Has More Questions over Apple iPhone Privacy