Knowledge economy is an economic form based on the production, distribution and use of information.

知识经济是建立在信息的生产、分配和使用基础之上的经济形态。

youdao

Stock index option is an option form based on stock index.

股票指数期权是以股票指数为标的物的期权形式。

youdao

Stock index option is an option form based on stock index.

股票指数期权是以股票指数为标的物的期权形式。

youdao