O, o /su; o/ (pl 0s, os) /suz; oz/ the 15th letter of the English alphabet; O-shaped sign or mark; (in quoting telephone numbers) 6033, 括板 → double three'. 英文字母的第十五個(gè)字母; 。形的符號(hào)或標(biāo)記; (報(bào)電話號(hào)碼)零(6033 讀作 six 0 double three) 0 Q App 4. 參看附錄四。