model study

例句：

1. 1. This is a great way to learn about the history of the city.
   这是一个了解城市历史的绝佳方式。
2. 2.The model study helped me understand the complex system better.
   这个模型研究帮助我更好地理解了复杂的系统。
3. 3. They conducted a model study on how to improve traffic flow in the area.
   他们进行了一项模型研究，探讨如何改善该地区的交通流量。