The author boxed the compass of negation in his article.

该作者在文章中依次探讨了各种反面的意见。

No reasonable negation can be offered.

没有合理的反对意见可以提出。

Although not universal, a vertical head nod for approval and a lateral headshake for negation is a common pattern across many cultures.

在许多文化中，人们上下点表示同意，左表示否定，尽管不是所有文化都遵循这个模式。