keystones是什么意思？

keystones

• n. 重点( keystone的名词复数 )，要旨，基本原理，拱心石；

例句

• Perfect our speech is one of the keystones of an authentic spiritual program. 改善我们说话的能力是一项实实在在的基本心灵课程.
• The visibility of tracks in these tiny keystones is superb ( see picture below ). 这些小楔石中的轨迹其可视性非常的好.
• The Work Deletion and Keystones of Short Message Chicane Casesin Our Country. 我国应对短信诈骗案件的工作缺失及重点.

柯林斯高阶英汉双解学习词典释义

• N-COUNT
  拱顶石
  A keystone is a stone at the top of an arch, which keeps the other stones in place by its weight and position.
• N-COUNT
  （政策、体系或进程的）基础，主旨
  A keystone of a policy, system, or process is an important part of it, which is the basis for later developments.
  例句
  Keeping inflation low is the keystone of their economic policy. 将通货膨胀率保持在较低水平是他们经济政策的主旨。