| 1. | His work is practically unknown here .
他的作品在这里实际上不为人知。 |
| 2. | What will the unknown devil bring ?
这个摸不透的恶魔会带来什么呢？ |
| 3. | The date of birth and death of qu yuan is unknown .
屈原的生卒年月不详。 |
| 4. | His whereabouts have been utterly unknown so far .
迄今他的下落全然未知。 |
| 5. | His present whereabouts is unknown .
他现在下落不明（不知道在什么地方）。 |
| 6. | The nascence of that kind of animal is unknown .
那种动物的起源不为人知。 |
| 7. | He stayed in an unknown city of revels .
他停留在一座不知名的狂欢之城中。 |
| 8. | The immediate cause of death is unknown .
死亡的直接原因不明。 |
| 9. | The science of intoning was unknown .
吟诵的学问还不为人所知。 |
| 10. | Whereabouts of the missing child is still unknown .
遗失的孩子还没有着落。 |
