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keystones
生词本

n.

  • 柯林斯高阶英汉双解学习词典

1. 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. 
2. 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. 

  • 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。