| 知识点（KP） | 南京大学202x | 美国英语新闻 |
| amn. + center | 64.04 | 668.41 |
| von. + center | 10.11 | 187.31 |
| center | 269.63 | 2796.01 |
| center + von. | 13.48 | 27.14 |
| center/bit | 47.19 | 173.38 |
| center/lex | 424.67 | 3542.34 |
| center/n | 347.15 | 3257.42 |
| center/np | 3.37 | 34.78 |
| 名词 center | 155.04 | 1326.75 |
| center/pos | 428.04 | 3537.67 |
| center/ske | 37.07 | 138.51 |
| center/v | 80.89 | 280.25 |
| 动词 center | 6.74 | 18.20 |
| center/forward | 0 | 1.93 |
| center/forward/n | 0 | 1.30 |
| center/vp | 0 | 2.65 |