名词

1. (对环境的)保护
Conservation is saving and protecting the environment.

2. (对文物或艺术品的) 保护
Conservation is saving and protecting historical objects or works of art such as paintings, sculptures, or buildings.

3. 节约;防止浪费
The conservation of a supply of something is the careful use of it so that it lasts for a long time.

1. the preservation and careful management of the environment and of natural resources

2. (physics) the maintenance of a certain quantities unchanged during chemical reactions or physical transformations

3. an occurrence of improvement by virtue of preventing loss or injury or other change

Synonym: preservation