阿斯顿 transliterates English 'Aston'. Its two famous bearers in Chinese sports/luxury vocabulary are
阿斯顿·
马丁 (Aston Martin, James Bond's car maker) and
阿斯顿维拉 (Aston Villa, the Birmingham football club).
阿 (ā) handles the 'A-',
斯 (sī) the '-s-',
顿 (dùn) the '-ton'.