O

英 [əʊ]

美 [oʊ]

n. 英语字母表的第15个字母; (说电话号码等时表示)零
int. 哦，啊（表示惊讶、痛苦、恐惧、赞叹等）

BNC.7311

牛津词典

noun

英语字母表的第15个字母
the 15th letter of the English alphabet
1. ‘Orange’ begins with (an) O/‘O’.
  orange一词以字母o开头。
（说电话号码等时表示）零
used to mean ‘zero’ when saying telephone numbers, etc.
1. My number is six o double three (= 6033) .
  我的号码是六零三三。

exclamation

英语字母表的第15个字母
Ois the fifteenth letter of the English alphabet.
零
Ois used to mean zero, for example when you are telling someone a telephone number, or mentioning a year such as 1908.
See also:O how mistaken you are!...O God, I want to go home.oh
(用于首字母为o的一些单词的缩写，如 old或organization)
Ois used as an abbreviation for words beginning with o, such as 'old' or 'organization'.

This is also how you would enable asynchronous I/ O on your system.
这也是您在系统中启用异步I/O的方法。
O how mistaken you are!
哎呀，你可大错特错了！
He signed up as a steward with P& O Lines
他签约了P&O航运公司，成为了一名乘务员。
NIO's nonblocking I/ O mechanism is built around selectors and channels.
NIO的非阻塞I/O机制是围绕选择器和通道构建的。
This reduces the number of I/ O operations to the log.
这减少了对日志进行I/O操作的数量。
This has a positive effect on the CPU costs as well as on the I/ O costs.
这对于CPU成本和I/O成本都有积极的影响。
This is possible through I/ O virtualization.
通过I/O虚拟化，将使其成为可能。
At nine o 'clock on the dot, they have breakfast.
他们在9点钟准时吃早饭。
O! The Huanghe ( River), cradle of the Chinese nation.
啊！黄河，你是中华民族的摇篮。
I will cover both dedicated and virtual I/ O ( VIO) systems.
我将涉及专用的和虚拟的I/O（VIO）系统。