| 21. | get to the core [heart] of the matter |
| 触及问题的核心
|
| 22. | pierce sb. to the core |
| 深深打动某人
|
| 23. | extract [take out] a core |
| 取出（果）核
|
| 24. | get to the core of the matter |
| 直入问题的本质
|
| 25. | hard core |
| （奠路基等的）碎砖石；（组织或运动中）斗志最坚定的核心力量；赤裸裸的性描写
|
| 26. | hard core of the opposition |
| 反对派中的骨干
|
| 27. | rotten at [to] the core |
| 烂透了的；坏透了的
|
| 28. | to the ( very ) core |
| 直至核心；透顶的，十足的，地道的
|
| 29. | penetrate the very core of the author's thoughts |
| 洞察作者思想的精髓
|