arete

n sharp mountain ridge, esp in Switzerland 陡峭的山脊（尤指瑞士的）.

architecture, archive, archives, archivist, archway, Arctic, Arctic Circle, ardent, ardently, ardor, ardour (US ardor), arduous, arduously, are, area, area code (US) dialling code, areca, areca nut (also betel-nut), aren't, arena, argon, argot, arguable, arguably, argue, argument, argumentation, argumentative, argumentatively, argy-bargy, aria, arid, aridity, aridly, aridness, Aries, aright, arise, arisen, aristocracy,