n (1)(蘋果等)果核(hard and solid central part of certain fruits such as apple and pear，containing the seeds)[C]：cut out the～of the apple把蘋果核挖出來;〖同〗kernel，centre;
(2)核心，要點(most important part of anything)[C]：We must get to the～of the matter/the argument/the subject/the problem.我們應(yīng)該觸及這事情/辯論/議題/問題的核心。The～of our appeal is freedom of speech.我們的要求的核心是言論自由。a subject on the～curriculum核心科目;very(vital)～of sb's theory/sb's work某人理論/所做工作的核心(精髓);〖同〗centre;
(3)電磁鐵芯;地核;核反應(yīng)堆(central part of a magnet or induction coil，the planet earth，a nuclear reactor，etc)[C]：the～of the earth地核;at the～of an atomic reactor在原子反應(yīng)堆中心處;
to the core 1)直達中心：rotten to the～(fig)完全腐爛了; 2)十分，完全：He is German to the～.他是個十足的德國人。
vt 去掉核(remove the core of sth)[T+n]：～an apple/a pear去掉蘋果/梨的核