| 1. | Satellite lifetimes in orbit range from a matter of days to hundreds of years .
卫星在轨道上的寿命从几天到几百年不等。 |
| 2. | For hundreds of years , st bernard 's dogs have saved the lives of travelers crossing the dangerous pass .
几百年来，圣伯纳德的狗挽救了许多穿越危险隘口的旅游者的生命。 |
| 3. | Hundreds of years ago there was an entire civilization
几百年前这里曾有一个文明 |
| 4. | These coins were minted in china hundreds of years ago
这些钱币数百年前铸造于中国。 |
| 5. | They were all invented hundreds of years ago
它们都是几百年前发明的。 |
| 6. | Tempera was used to paint frescos hundreds of years ago
数百年前蛋彩画颜料被用来画壁画。 |
| 7. | But hundreds of years later it reappeared -
但数百年后却又再度出现 |
