needs wants demands 区别

needs 是需要的意思，wants 则是想的意思，而demands 则是需求的意思，区别可以从以下例子看出：

There are many demands for dwelling place, each of us wants to have own home, government release more land to meet the needs. 对住处的需求很多，我们每个人都想拥有自己的家，政府释放更多的土地来满足需求。