Nodding the head means agreement, while shaking it means disagreement.

点头表示同意，而摇头则表示不同意。

youdao

Some listen attentively, perhaps nodding as if in agreement, while they are silently rejecting everything that is being said.

一些人聚精会神倾听，或许会点头像接受既成事实的样子，而实际上是在默默地否认医生的诊断。

youdao

In most countries, nodding the head up and down shows agreement, while shaking the head means that you do not agree, or that you refuse to do something.

在大多数国家，点头表示同意，摇头则表示不同意，或不愿意去做某件事。

youdao

Finally, while nodding to the expert nature of the Lords, you said it should call in the experts, not consist of them.

ECONOMIST: Letters

It's always good to see the younger lads in their element, myself included, while the older guys do the experienced thing, standing at the bar and nodding their head to the occasional Bruce Springsteen song while reminiscing about the 1980s when electro-pop and shellsuits were all the rage, apparently.

BBC: Confidence is a strange thing.

While Big Ten football is turning out to be as sleep-inducing as whatever Rip took before nodding off, it's impossible to deny that the ND defense is for real.

WSJ: Florida State, Notre Dame Roll: College Football's Throwback Weekend