1. | 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。
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2. | Beyond the frontier lay very real dangers. |
| 在开发地区以外十分危险。
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3. | Our car was turned back at the frontier . |
| 我们的汽车在边境处被勒令折返。
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4. | There's a lot of smuggling across this frontier . |
| 这段边境走私活动很猖獗。
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5. | This frontier incident probably means war. |
| 这次边境事件可能导致战争。
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6. | There were several incidents on the frontier . |
| 边境上发生了几起事件。
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7. | The frontier had worked them over inside. |
| 边疆(的生活)把他们彻底改变了。
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8. | They were shot trying to cross the frontier . |
| 他们在企图越境时被击毙。
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9. | The soldiers guarded the frontier of the country. |
| 战士守卫边疆。
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10. | The frontier of medical knowledge are being pushed farther onwards as time goes on. |
| 随着时间的推移,人们不断扩展医学知识的领域。
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