In the late 1700s and the earlier 1800s, the development of the piano coincided with the growth of the middle class in Western Europe.
在18世纪晚期和19世纪早期，钢琴的发展恰好与西欧中产阶级的壮大是同步的。
2
In Hungary, as in much of Eastern Europe, an overwhelming proportion of women work, many of which are in middle management and light industry.
在匈牙利，和许多东欧国家一样，绝大多数妇女从事工作，其中许多人从事中级管理和轻工业工作。
3
As these specialists circulated around Europe, they sought to exploit the appeal of fireworks for a wider audience, including the growing middle classes.