review this passage to express it in another English way311 Merit goodsIt is defined not by the price system but by the distribution of products or services based on price or demandLiu2021Quality good

3.1.1 Merit goods Merit goods are products or services that are not determined by the price system, but rather by the distribution based on price or demand. These goods are crucial for the well-being of residents, and it is the government's responsibility to ensure their provision. However, there is often a shortage in supply, either due to limited quantity or affordability for ordinary people. To address this, the government must intervene periodically, as people are increasingly focused on saving money in the long run to reap the benefits of purchasing these goods.

3.1.2 Public goods Public goods are products or services where the consumption by additional consumers does not diminish the quantity or quality of the product for existing consumers. They have two key characteristics: non-competition and irrevocability. Non-competition means that the addition of more consumers does not reduce the quality or quantity of the product, and the additional cost of consumption for others is zero. Examples of non-competitive goods include street lights and bridges, which can serve many people at once. Irrevocability refers to goods provided by the government free of charge, such as parks and advertisements. These goods are provided to serve the public and are not intended to generate profits for the government. The provision of public goods is based on environmental, economic, and other factors