朝の市場は活気に満ちていた。
The morning market was full of life.
新しい店が増えて、商店街に活気が戻ってきた。
With more new shops opening, the shopping street has come back to life.
このクラスは活気があって、授業中の発言も多い。
This class is lively, and the students speak up a lot during lessons.
不況のせいで町全体が活気を失っている。
Because of the recession, the whole town has lost its vitality.