1 [C] the hard centre of certain fruits, containing seeds 果心;果核:
an apple core苹果心
2 [sing] the central or most important part of sth 核心:
the core curriculum (= the subjects that all pupils have to study)核心课程What's the core issue here?核心问题是什么?
3 [C] the central part of a planet 行星的核心:
the earth's core地核☞picture at seismic 见seismic插图
to the core completely; in every way 完全;彻底:
The news shook him to the core (= shocked him very much).这消息把他吓坏了。