Sentence Composition
| 1 | 他 | tā |
| 2 | 專注 | zhuānzhù | to focus; to concentrate; to give one's full attention |
| =3 | 於 | yú |
|
| =3 | 於 | Yū |
|
| =3 | 於 | wū |
|
| 4 | 他 | tā |
| =5 | 的 | de |
|
| =5 | 的 | dī | a taxi; a cab (abbr. for 的士 dīshì) |
| =5 | 的 | dí | really and truly |
| =5 | 的 | dì | (bound form) bull's-eye; target |
| 6 | 研究 | yánjiū |
classifier: 項 |