中强

例句：

1. 1. The center of the city is bustling with activity.
   市中心熙熙攘攘。
2. 2. The strength of the company lies in its innovative approach.
   公司的力量在于其创新的方法。
3. 3. The middle class is growing stronger every year.
   中产阶级每年都在增长。