1
- a punctuation mark (:) indicating冒号(:), 用法如下：
1.1
- that a writer is introducing a quotation or a list of items［引出引用语或表示列举］。
1.2
- that a writer is separating two clauses of which the second expands or illustrates the first［分隔两个分句, 其中后者详细阐述（或举例说明）前者］。
1.3
- a statement of proportion between two numbers表示两个数字之间的比例：10:1. 10比1.
1.4
- the separation of hours from minutes (and minutes from seconds) in a statement of time given in numbers［以数字表示时间时“时”和“分”（或“分”和“秒”）的分隔］：4:30 pm. 下午4点30分。
1.5
- the number of the chapter and verse respectively in biblical references用在《圣经》的章和节之间：
Exodus 3:2.
《出埃及记》第三章第二节。
词源
mid 16th cent. （as a term in rhetoric denoting a section of a complex sentence, or a pause before it）： via Latin from Greek kōlon 'limb, clause'.
- Anatomy the main part of the large intestine, which passes from the caecum to the rectum and absorbs water and electrolytes from food which has remained undigested. Its parts are called the ascending, transverse, descending, and sigmoid colon.【剖】结肠。
词源
late Middle English: via Latin from Greek kolon.