这是一场成功的社会革命。

Zhè shì yī chǎng chénggōng de shèhuì gémìng.

This is a successful social revolution.

历史上发生过许多重大革命。

Lìshǐ shàng fāshēng guò xǔduō zhòngdà gémìng.

Many significant revolutions have occurred in history.

这个国家曾经经历过一场革命。

Zhège guójiā céngjīng jīnglìguò yī chǎng gémìng.

This country has experienced a revolution in the past.