科学技术是第一生产力
kē​xué​jì​shù​shì​dì​yī​shēng​chǎn​lì

primary productive force

科学技术是第一生产力 (科學技術是第一生產力) kē​xué​jì​shù​shì​dì​yī​shēng​chǎn​lì
primary productive force
science and technology is the number one productive force (from a 1978 speech by Deng Xiaoping introducing the Four Modernizations)

Sources
Definitions
CC-CEDICT