density of shops

例句：

1. 1. The city'spopulation density is high due to its largenumber of businesses.
   由于其众多的商业活动，该城市的人口密度很高。
2. 2. The concentrationof tourists in the area has led toa rise in crime rates.
   该地区游客的集中导致犯罪率上升。
3. 3. Thedensity of the forest isso dense that it blocks sunlightfrom reaching the ground.
   森林的密度如此之高以至于阻挡了阳光到达地面。