frontier

['frʌntjə]

n.边界, 边境, 尖端, 边缘

例句与用法：

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。

Sweden has frontiers with Norway and Finland.

瑞典与挪威和芬兰接壤。

The frontiers of medical knowledge are being pushed forwards as time goes on.

医学知识的新领域正随着时间向前推进。

词形变化：

名词复数: frontes |

详细释义：

n.[C]

1. 国境, 边境; 边疆[(+between/with)]

Everything is quiet on the frontier.

边境上一切安静。

2. 【美】(靠近未开发地带的)边远地区[the S]

3. (探索活动的)新领域; 未完全开拓的领域[P1][(+of)]

Professor Field is devoted to the exploration of the frontiers of medicine.

菲尔德教授致力于探索医学研究的新领域。