conservation

1. N-UNCOUNT Conservation is saving and protecting the environment. (對環境的) 保護

...a four-nation regional meeting on elephant conservation. …一次有關大象保護的4國區域性會議。

2. N-UNCOUNT Conservation is saving and protecting historical objects or works of art such as paintings, sculptures, or buildings. (對歷史文物、藝術品等的) 保護

Then he began his most famous work, the conservation and rebinding of the Book of Kells. 接著，他就開始了他最著名的工作，即對《凱爾經》的維護和重新裝訂。

3. N-UNCOUNT The conservation of a supply of something is the careful use of it so that it lasts for a long time. 節約

...projects aimed at promoting energy conservation. …旨在促進能源節約的項目。