If you preserve a situation or condition, you make sure that it remains as it is, and does not change or end. 维护
noun [具体名词] 保留，保存
He spoke about preserving the country as a secular state. 他谈到保持该国的非宗教国性质。
- preserving 出现在下面的课文中（提供视频、音频及笔记等可系统性学习）
- Lesson 48 Planning a share portfolio
