英语释义

1. the wedge-shaped piece at the crown of an arch that locks the other pieces in place — see arch illustration

2. something on which associated things depend for support
determination, a keystone of the puritan ethic
— L. S. Lewis

3. a species of plant or animal that produces a major impact (as by predation) on its ecosystem and is considered essential to maintaining optimum ecosystem function or structure

4. a large stone at the top of an arch that locks the other stones in place

5. something on which other things depend for support

6. the wedge-shaped piece at the top of an arch that locks the other pieces in place

英汉例句

• this paper discussed the keystone species concept and introduced the typical characteristics of keystone species and their identification in communities or ecosystems.

  在本文中，对关键种的概念进行了讨论，并介绍了关键种的典型特征及其在群落和生态系统中的判别。

• it is obviously that the two kinds of keystone species need different strategy to manage for biodiversity conservation: protecting for the former and controlling for the later.

  因而，在生物多样性保护上，对它们应有不同的管理对策：既要重视前者的保护，又要重视后者的控制。

• and we need them -- they are keystone species for everything from building coral reefs to anchoring the ocean food chain to making a killer linguine and clam sauce.

  而且我们也需要它们——它们是从建造珊瑚礁，到稳固海洋食物链，再到美味的蛤蜊酱意面的关键物种。

• we must make sure that redd+ projects are located in biodiversity-rich areas where keystone species such as great apes are struggling to survive.

  我们必须确保redd+项目落实到具有丰富的生物多样性的地区，因为这里类人猿等关键物种正生活在「水深火热」之中。

相似词

base(Base) （英、美、爱尔兰）马濑（人名）

basis基础；底部；主要成分；基本原则或原理

bedrock[地质] 基巖；根底；基本原理

bottom底部；末端；臀部；尽头

cornerstone基础；柱石；地基

footing步行；在…上行走；总计（foot的ing形式）

foundation基础；地基；基金会；根据；创立

ground土地的；地面上的；磨碎的；磨过的

groundwork基础；地基，根基

root生根，固定；根源在于

underpinning基础，基础材料；[矿业] 支柱，支承结构；支撑

warp弯曲，歪曲；偏见；乖戾

warp and woof[纺] 经纬线