1 sentence for 主力军 (zhǔ​lì​jūn — mainstay)

1. 中小企业是国家经济发展的主力军。

   Zhōng xiǎo qǐ​yè shì guó​jiā jīng​jì fā​zhǎn de zhǔ​lì​jūn.

   Small and medium-sized enterprises are the main driving force of the country's economic development.

   Source: Dong Chinese Dictionary