O, o
noun [ C or U ] uk/əʊ/ us/oʊ/ Os, O's or o's
(LETTER)
（英语字母表的第15个字母）
the 15th letter of the English alphabet
(ZERO)
(also o); (also oh)（用于口语）零
used in speech to mean zero
My phone number is three, one, o, five, one, double o (= 3105100). 我的电话号码是3105100。
The year 1705 is usually pronounced seventeen o five. 1705年通常读作“十七”“零”“五”。
O, o
exclamation old use or literary uk/əʊ/ us/oʊ/
（用于称呼或表达情绪）噢，啊
used when talking to someone or something, or expressing something in an emotional or formal way
O Zeus! Hear my prayer. 噢，宙斯！听听我的祷告吧。
Compare: oh exclamation