èr / shí / shì / jì / wǔ / shí / nián / dài / zhōng / guó / kāi / zhǎn / le / sù / fǎn / yùn / dòng

二十世纪五十年代，中国开展了肃反运动。

In the 1950s, China launched a campaign to eliminate counterrevolutionaries.