| 1. | The trees were planted at 20 feet intervals .
树的间隔为避免20英尺。 |
| 2. | A typical run-up time is about 20 seconds .
典型起转时间是20秒左右。 |
| 3. | We interviewed 20 people for the job .
为这份工作我们接见20人。 |
| 4. | 20 p is the minimum fare on buses .
公共汽车票价起码是20便士。 |
| 5. | Neaps are generally 20 per cent lower than average tides .
小潮比平时低20。 |
| 6. | The net profit amounts to 20 dollars per ton of ore .
每吨矿砂的净利达20美元。 |
| 7. | We had to drill 20 miles .
我们得靠两条腿走二十英里了。 |
| 8. | He did 20 miles a day on foot .
他一天走了二十英里。 |
| 9. | Primary plaques were detectable in 16 to 20 hours .
在16到20小时内可查出原发溶斑。 |
| 10. | It sells at a premium of 20 percent .
这是加二卖出的。 |
