| [/ˈfrʌntɪə(r); US frʌnˈtɪər; frʌnˋtɪr/] n 用法:
1 [C] (a) ~ (between sth and sth); ~ (with sth) border between two countries 国界; 边界:
the frontier between Austria and Hungary 奥地利和匈牙利之间的边界.
(b) land on either side of such a border 边疆; 边陲; 边境; 国境:
[attrib 作定语] a frontier zone 边境地带 *
a frontier town 边疆城镇 *
frontier disputes 边界争端. 用法:
2 the frontier [sing] (esp US) extreme limit of settled land, beyond which the country is wild and undeveloped 已开发地区的边缘地带:
Beyond the frontier lay very real dangers. 在开发地区以外十分危险. 用法:
3 the frontiers [pl] extreme limit, esp of knowledge about sth 极限（尤指有关某事物的知识的）; 尖端; 边缘:
advance the frontiers of science 拓展科学的领域 *
teach near the frontiers of one's subject, ie give recently discovered information 讲授个人专业领域的新知识. =>Usage at border 用法见border. |