èr / shí / jì / wǔ / shí / nián / dài / xǔ / duō / qǐ / yè / kāi / shǐ / shí / xíng / gōng / sī / hé / yíng

二十世纪五十年代，许多企业开始实行公私合营。

In the 1950s, many enterprises began operating under joint public-private ownership.