the system of trade and industry by which the wealth of a country is made and used

the global economy 全球经济

the German/US economy 德国／美国经济

the state of the economy 经济状况

a weak/strong economy 疲软／强劲的经济

Tourism contributes millions of pounds to the local economy. 旅游业带来数百万英镑的地方收入。

the intentional saving of money or, less commonly, the saving of time, energy, words, etc.

They've had to make economies since Nathan lost his job. 自从内森失业以来，他们不得不节俭度日。

This can be done by machines with more speed and economy. 这可以用机器来完成，又快又经济。

She writes with such economy - I've never known a writer say so much in so few words. 她惜墨如金——我从没见过哪位作家能如此言简意赅。