| 1. | You are exploring the frontiers in science . 你在探究科学的新领域。 |
| 2. | Our car was turned back at the frontier . 我们的汽车在边境处被勒令折返。 |
| 3. | Passport must be shown at the frontier . 出示护照方可入境。 |
| 4. | It is through education that we expand the frontiers of knowledge . 通过教育,我们扩大了知识的阵地。 |
| 5. | He had been decoyed across the frontier and arrested as a spy . 他被引诱越过边界,然后当做间谍被捕。 |
| 6. | The frontier ranges from the northern hills to the southern coast . 边界从北部山地一直延伸到南部海岸。 |
| 7. | Great news is stirring. they say the french have crossed the frontier . 消息紧得很,听说法国军队已经过了边境了。 |
| 8. | The american western frontier in films is not really the frontier of historical fact . 电影中的美国西部边疆与历史事实大相径庭。 |
| 9. | Slipping past the frontier towns, they were scalping and killing whole families . 他们窜过边界上的村镇,剥人头皮,把一家一家人杀死。 |
| 10. | He had started life in a log cabin in the frontier territory that is now tennessee . 他出生于现在称为田纳西州的那个边远地区的一个小木房里。 |