| 1 | The art was lost to the world. | |
| 2 | Some scientific books of ancient China have been lost. | |
| 3 | With the extinction of a language, an entire culture is lost. | |
| 4 | All copies of the original collection of laws werethought to have been lost. | |
| 5 | But there are 30 other traditional instruments that we've already lost. |