foundation stone

• 1. 

  N-COUNT A foundation stone is a large block of stone built into a large public building near the bottom. It is often involved in a ceremony for the opening of the building, and has writing on it recording this. 奠基石 [oft with poss]

  例：

  The official foundation stone for the dam was laid in 1961.

  这座水坝的官方奠基石于1961年埋下。

• 2. 

  N-COUNT The foundation stone of something is the basic, important thing which its existence or success depends on. 根本 [usu N 'of' n]

  例：

  ...these foundation stones of the future: education, training, research, development.

  ...未来之根本：教育、培训、研究和发展。