1 a border between two countries, or (esp. in the past in the US) a border between developed land where white people live and land where Indians live or land that is wild:
At the frontier, there were people pestering tourists for cigarettes, food or alcohol.
Two armed men were caught trying to cross the frontier at night.
The president pledged to respect the existing frontiers between the two countries.
However, this particular frontier has been well mined, and large parts of this book tread well-worn paths.
Technical inefficiency is the deviation of an individual vessel's production from this best-practice frontier, and hence is a measure of relative technical efficiency.
Violation of this assumption will also affect the production frontier if the counties that define the frontier do not have sufficient standing timber.
中文繁体
國境,邊境, (十九世紀時定居者開始搬入並居住的美國西部)前沿地帶…
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国境,边境, (十九世纪时定居者开始搬入并居住的美国西部)前沿地带…
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frontera…
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fronteira…
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国境(線)…
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iki ülke arasındaki sınır, hudut…
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frontière…
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