她的脸上洋溢着幸福感。

Her face radiated with happiness.

她在工作中找到了幸福感。

She found happiness in her work.

很难量化幸福感。

It is hard to quantify happiness.

简单的生活方式能带来更多的幸福感。

A simple lifestyle can bring more happiness.

朋友的陪伴让他感到无比的幸福感。

The company of friends brought him immense happiness.

孩子们在公园里玩耍时充满了幸福感。

The children were filled with happiness while playing in the park.

一个好的生活环境可以提高人们的幸福感。

A good living environment can enhance people's sense of happiness.

在心理学中，压力水平和幸福感之间常常存在负相关。

In psychology, there is often a negative correlation between stress levels and happiness.

人民的幸福感是衡量一个国家是否富强的标准之一。

People's sense of happiness is one of the standards to measure whether a country is prosperous and strong.

增加他们持续的幸福感。

Add to their sustained happiness.