happiness是不可数名词。
例句：
Whats your definition of happiness?
你对幸福的定义是什么？
Money is not essential to happiness.
金钱对于幸福并非必不可少。
扩展资料
She found happiness in her later years.
她在晚年才寻得幸福。
Happiness is a derivative of happy.
happiness是happy的派生词。
You have destroyed my hopes of happiness.
你毁掉了我得到幸福的希望。
