吃透英语课本,提升在校竞争力
n. 边境;边界
复数:frontiers
push back the frontiers
开拓新领域
a novel about a family’s struggle on the American frontier
描写一家人在美国边远地区奋斗的小说
Lille is close to the frontier between France and Belgium.
里尔靠近法比边境。
new frontier
新边疆;新境界
frontier orbital
前沿轨道
efficient frontier
有效边界;效率前缘
frontier trade
边境贸易
adj.[数]边界的;开拓的
borderline
n.前沿;[数]边界;国境
boundary
border
考纲分布
n. 国界; 边界; 边境
n. [常pl.]尖端; 新领域
考纲释义
1 ...as the frontier vanished...
2013.12 CET4 阅读理解
2 ...fires deliberately set by frontier settlers and developers hurl up almost half a billion metric tons of carbon a year...
2013.6 CET6 阅读理解
3 ...When the frontier vanished about a century ago...