frontier

US /frʌnˈtɪr, frɑn-, ˈfrʌnˌtɪr, ˈfrɑn-/

UK /'frʌntɪə(r)/

B1 中級英檢高級多益
n.名詞國界;邊境
This is the eastern frontier of my country
n.名詞前沿
He works on the frontier of Physics research
n.名詞未開發的邊遠地帶
Life on the American frontier in the 1800's was difficult

影片字幕

Peter Diamandis - 談人類下一次的大躍進 (中英雙字幕) (Peter Diamandis - 談人類下一次的大躍進 (中英雙字幕))

15:29Peter Diamandis - 談人類下一次的大躍進 (中英雙字幕) (Peter Diamandis - 談人類下一次的大躍進 (中英雙字幕))