keystone
中文释义
拱顶石；（计划，论据等的）基础，主旨
n. the central stone at the summit of an arch.
常用搭配
- the keystone of the argument论点的关键
- keystone species关键物种
- keystone habit关键习惯
例句
- The keystone is crucial for the stability of the arch.拱顶石对拱门的稳定性至关重要。
- In this project, communication is the keystone of success.在这个项目中,沟通是成功的关键。