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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。Researchers are pushing back the frontiers and opening doors to reveal why things happen and how things work.研究人员正在开拓研究领域，使得认识世界万物发生的原因和机制成为可能。The president pledged to respect the existing frontiers between the two countries.总统承诺维持两国间疆界现状。We're pushing back the frontiers of technology.我们正在不断推进技术的前沿。We're pushing back the frontiers of science.我们在开拓新的科学领域。And the same evening German motorized elements reached the serbian frontiers.同日晚间，德国的摩托化部队进抵塞尔维亚边境。This is an easy way of crossing different social frontiers.这能轻松地跨越不同的社会界限。Naked aggression and an attempt to change frontiers by force could not go unchallenged.公然的侵略和企图用武力改变边界的行径是不能置之不理的。Their research has pushed forward the frontiers of knowledge.他们的研究推进了知识新领域的发展。With open frontiers and lax visa controls, criminals could cross into the country without restraint.由于边境开放和签证管理松懈，罪犯可以毫无限制地进入这个国家。Sweden has frontiers with Norway and Finland.瑞典的边界与挪威和芬兰相接。The scientists' work will push back the frontiers of physics.科学家的工作将拓展物理学领域。Community leaders want to strengthen controls at external frontiers.社区领导想要加强对小区外围的管理。 |