核心畫面
Picture a hand held over something that is running out — a stock, a forest, a tank of water — with the aim of keeping what is there rather than making more. The word is not about growing or fixing; it is about the thing still being there later.
可以想成：一隻手護在一樣正在減少的東西上——存量、森林、一桶水——目的不是把它變多，而是讓現在有的留住。這個字的重點…更多收起
可以想成：一隻手護在一樣正在減少的東西上——存量、森林、一桶水——目的不是把它變多，而是讓現在有的留住。這個字的重點永遠在「以後還在不在」，不在改良或增加；所以它同時可以用在守住一片棲地，和守住一度電。原始詞典資料6 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
conservationnoun/ˌkɑnsə(ɹ)ˈveɪʃən/
- 1
The act of preserving, guarding, or protecting; the keeping (of a thing) in a safe or entire state; preservation.
- 2
Wise use of natural resources.
- “My father had ideas about conservation long before the United States took it up.[…]You preserve water in times of flood and freshet to be used for power or for irrigation throughout the year. …”
- 3
biologynatural-sciencesThe discipline concerned with protection of biodiversity, the environment, and natural resources
- 4
biologynatural-sciencesGenes and associated characteristics of biological organisms that are unchanged by evolution, for example similar or identical nucleic acid sequences or proteins in different species descended from a common ancestor
- 5
The protection and care of cultural heritage, including artwork and architecture, as well as historical and archaeological artifacts
- 6
natural-sciencesphysical-sciencesphysicslack of change in a measurable property of an isolated physical system (conservation of energy, mass, momentum, electric charge, subatomic particles, and fundamental symmetries)
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。