| 词组 | frontier |
| 释义 | 1． the frontier 常指 “( 美国早期荒野的) 边远地区”: The frontier was rough and law- less. 2． 喻指“尚待开发的领域”时，fron- tier 常用复数: the frontiers of knowledge the frontiers of science the frontiers of technology the frontiers of civilization the frontiers of physics the frontiers of freedom the frontiers of finance the frontiers of legal liability the frontiers of medical research the frontiers of life sciences the frontiers of banks activities the frontiers of e-learning the frontiers of biomedical re- search the frontiers of civil rights the frontiers of nationalism 3． 前常用介词 in，on，at，within 等: in the frontier city forts on the Russian frontier at the frontiers of medical science a peace within his frontiers |
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