プログレッシブ和英中辞典(第4版)の解説
こうけいき【好景気】
prosperity；〔一時的な〕a [an economic] boom, ((in)) good times
1980年代は好景気であった
There was a (business) boom [Business was very good] in the 1980s.
近ごろ市場は好景気である
The market has been active [brisk/lively] recently.
好景気に向かっている
Business is looking up.
好景気の波に乗る
take advantage of a boom