But when the emotion that leads to stiffening the lip is more intense, and involves strong muscle tension, facial feedback may heighten emotional response.

但是当导致嘴唇僵硬的情绪变得更加强烈，并导致肌肉强烈绷紧时，面部表情反应就可能会增强情绪反应。

youdao

People who intentionally and frequently use humor know tension can be used deliberately to heighten the impact of the humor.

一些有意经常使用幽默的人都知道，有意地紧张可以用来提高幽默的影响。

youdao

A humorous or farcical interlude in a serious literary work, especially a tragedy, intended to relieve the dramatic tension or heighten the emotional impact by means of contrast.

轻松镜头，滑稽性调剂：幽默的或滑稽的插曲，在严肃的文学作品特别是悲剧中，打算通过对比的方式减轻戏剧紧张或提高感情上的影响。

youdao

Garvaghy Residents Coalition spokesman Breandan MacCionnaith said the order's proposal to march on 2 July would heighten tension in the area over a longer period.

BBC: Drumcree mediator starts work

This, and the good-natured enthusiasm of the Pakistani crowds, have lessened fears that the cricket might heighten communal tension if, for example, some alienated members of India's muslim minority were to celebrate a Pakistani victory.

ECONOMIST: The India-Pakistan cricket series

We've always intended to heighten the dramatic tension in our music, and we've simply used a broader palette here.

NPR: Exclusive First Listen: Lightning Dust