| 1. | A typical run-up time is about 20 seconds .
典型起转时间是20秒左右。 |
| 2. | The divergence time is now greater than 30 sec .
发散时间超过30秒。 |
| 3. | The champion is leading by eighteen seconds .
该冠军领先十八秒。 |
| 4. | The winner 's time was 11.6 seconds .
获胜者用的时间是11秒6。 |
| 5. | An exposure of one-hundredth of a second will be enough .
曝光百分之一秒就够了。 |
| 6. | The race horse was clocked at two minutes thirty seconds .
这匹马在比赛中跑了2分30秒。 |
| 7. | The velocity of light is about 300,000 kilometres per second .
光速约为每秒30万公里。 |
| 8. | An eastbound car travels a distance of 40m in 5s .
一部向东驶的汽车在5秒里走了40米距离。 |
| 9. | The exact length of the year is 365 days 5h 48min 46s .
一年的精确时间是365天5小时48分46秒。 |
| 10. | Allow three to five seconds for these rapid ventilations .
这样做35秒以达到快速通气的目的。 |
