前缀a- 同ad-. 词根mel, 加强，多，见multitude, 许多。-ior, 比较级后缀。

1. He expected me to do something to ameliorate his depression.

他希望我做点什么好让他不那么沮丧。

2. Nothing can be done to ameliorate the situation.

做什么也无法使情况好转。

3. Steps have been taken to ameliorate the situation.

已经采取措施以改善局面。

4. In every human being there is a wish to ameliorate his own condition.

改善自己境况的愿望人皆有之.

5. Everyone wishes to ameliorate his own condition .

改善自己境况的愿望人皆有之。