a period of time, sometimes imaginary, when everyone was happy, or when a particular art, business, etc. was very successful

Adults often look back on their childhood as a golden age. 成年人常常追忆童年时代，认为那是他们最美好的岁月。

She was an actress from the golden age of the cinema. 她是在电影业鼎盛时期脱颖而出的女演员。