make life easier for the population

例句：

1. 1. The engineer made a model of the new car.
   工程师制作了新款汽车的模型。
2. 2. They made a decision to move to a new city.
   他们决定搬到一个新城市。
3. 3. The scientist made an experiment to test the theory.
   科学家做了一个实验来测试这个理论。