景气的英文：
prosperity
(economic) boom

参考例句：

It's booming.
景气繁荣。

There's a certain amount of slack in the car industry at the moment.
眼下汽车工业不太景气。

Business is at rather a low ebb.
商业颇不景气。

the nadir of their fortunes.
他们最不景气的时候

Rebound from the long recession
从长期的萧条复原[恢复景气]

The car industry has not done very well in recent years.
"最近几年中,汽车工业不太景气。"

Business has been very poor but they expect it to pick up again before Christmas.
生意一直很不景气，但他们可望在圣诞节前再次好转。

"With the market so good, it is high time that we get our products ready to sell."
"市场景气旺,是我们准备销售我们产品的最佳时机。"

I don't think Mr. Brown is on the up and up.
我认为布朗先生不是个老实人(美国:正直的、认真的,英国:越来越好的、景气的)

prosperity是什么意思：
n. 兴旺，繁荣，昌盛，成功

Much effort, much prosperity.
愈努力就愈成功。

Cheats never prosper
骗人发不了财

In prosperity think of adversity
居安思危

economic是什么意思：
adj. 经济上的；经济学的

an economical shopper;
精打细算的购物者;

economic planning
制订经济计划