其作用是表示快乐和安人心静。

Its function is to show happiness and put people at ease.

youdao

静默是表示快乐的最好方法。

Silence is the perfectest herald of joy.

youdao

他做出的表示快乐的动作也是极笨拙、极难看的。

He made the most uncouth and clumsy gestures of delight.

youdao

They're all bright, they're all cheerful, they all say "Merry Christmas," etc., etc., etc.

它们都是明亮，欢乐的代名词，都表示圣诞快乐。

耶鲁公开课 - 文学理论导论课程节选