1.边疆;边界,边缘
2.新开辟地,边地;〈美〉边疆城市
3.(知识等的)尚待开发的领域
1.边疆的
2.新垦地的,边地的
1.a border between two countries, especially one with official points where people or vehicles cross; the outer edge of a country or area that is the farthest point where people have started to live and build towns; the western edge of the U.S. that Europeans had reached in the 17th, 18th, and 19th centuries; on or relating to a frontier
2.the most advanced or recent ideas about something
1.'Financial reform and land reform are the last two frontiers, and are the most difficult, ' he said.
黄亚生说，金融改革和土地改革是最后的两道前沿，也是最为重要的。
2.It should explore new frontiers; therefore it should be able to keep the continuing programs up to date even in my absence.
学院应该探索新的领地，因此，即使在我死后，它依然能够保证我们的项目不会落伍。
3.In his lifetime the great frontiers were the oceans, and a historian later said, "He lived by the sea, died on it, and was buried in it. "
在他生活的年代，大洋是无尽的边界，历史学家后来说：“他生于海边，逝于海上，葬于海中。”
4.And yet the current imagination continues to run to control, toward new frontiers and horizons of it.
然而，目前的心思仍是控制孩子，甚至到了登峰造极的地步。
5.Within the area of consciousness with its wide and narrow frontiers, thought is ever trying to find a secure spot.
在疆域或宽或窄的意识领域内，思想始终试图找到一个安全的地点。
6.No one knows for sure how serious each of these dangers will be. But one thing they have in common: they do not respect state frontiers.
谁也不能确实知道，这每一种危险到底有多么严重。但是我们知道，这些危险有一个共同点：它们都是不尊重国界的。
7.It conveys all the color you'd expect from a place where the frontiers of China and the Greek Empire were just a camel ride away.
它传递出了你对它所期望的所有的色彩，那儿对中国和希腊帝国仅是一个用骆驼托运贸易的前沿。
8.The Locarno Pact was signed in London, guaranteeing peace and frontiers in Europe.
在伦敦签署保障欧洲和平及国家边境的《洛迦诺条约》。
9.Some of that money is going to new frontiers, like deep water.
其中的一部分被投入到未勘探领域，如深海。
10.The excess spending floods across the frontiers, generating a huge trade deficit and a corresponding outflow of dollars.
过剩的支出跨越边境，造成了巨额贸易逆差和相应的美元外流。