ameliorate

例句：

1. 1. The teacher's feedback significantly improved our understanding of the material.
   老师的反馈极大地提高了我们对材料的理解。
2. 2. The company's marketing strategy has greatly ameliorated its market share.
   公司的营销策略大大提高了其市场份额。
3. 3. By implementing these measures, we can ameliorate the quality of life in our community.
   通过实施这些措施，我们可以提高我们社区的生活质量。