cheerfulness

n.

高兴，快活；

1. Our friends have a look of cheerfulness.
   我们的朋友看上去很高兴。
2. She put on a show of cheerfulness to make her doctor think that she was well.
   她装出高兴的样子，想使医生认为她已经好了。
3. Cheerfulness doesn't always imply happiness.
   快活并不总是意味着幸福。
4. In your latest books, the sense of menace has receded, and the prevailing atmosphere is one of quasi mathematical, geometric cheerfulness.
   在你最近出版的书中，危机感有所减退，但是占主要地位的是一种类似数学的，几何学的快活。

Cheerfulness
Cheerfulness /
Trait cheerfulness and the sense of humour
Do cheerfulness, exhilaration, and humor production moderate pain tolerance? A FACS study.
State and trait cheerfulness and the induction of exhilaration: A FACS study.
A Life Course Perspective on Childhood Cheerfulness and its Relation to Mortality Risk
From Good Cheer to "Drive-by Smiling": A Social History of Cheerfulness
[Communication with patients in palliative care: favoring cheerfulness and optimism]
To be in good or bad humour: Construction of the state form of the State-Trait-Cheerfulness-Inventory-STCI
Assessing the ?humorous temperament“: Construction of the facet and standard trait forms of the State-Trait-Cheerfulness-Inventory...