大多数心脏病发作的患者都在45-65岁这个年龄区间。

Most heart attack victims are in the 45-65 age ___bracket.

35-49岁年龄区间的电影院上座率保持稳定。

Cinema attendance in the 35-49 age ___bracket remained stable.

新的税收政策影响了最高收入区间的人群。

The new tax policy affects people in the highest income ___bracket.