http://www.pons.de/produkte/3-12-517841-X/（牛津大学出版社授权产品）
英语
西班牙语
frontier [美 ˌfrənˈtɪr, 英 ˈfrʌntɪə, frʌnˈtɪə] 名词
1.1. frontier (between countries):
1.2. frontier (in US history):
2. frontier (of knowledge):
- frontier
- frontera f
- frontier technology
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西班牙语
英语
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- frontier guard
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- frontier 书
在《PONS词典》中的词汇
英语
西班牙语
在《PONS词典》中的词汇
英语
西班牙语
单语范例（未经PONS编辑处理）
He overstayed his leave, lost his government post, and the decision to become a full-time actor was effectively made for him.
en.wikipedia.org On an average, a post office serves an area of 21.23 sq; km and a population of 7,114 people.
en.wikipedia.org Because the case seemed to have been solved, no post-mortem examination was ordered.
en.wikipedia.org Notably, the difference is in the way volume discount is achieved, as a post-purchase rebate instead of an instant discount, allowing for an immediate buyer's purchase.
en.wikipedia.org Examples include email and bulletin board systems, where participants send or post messages at different times.
en.wikipedia.org