RAS syndrome stands for Redundant Acronym Syndrome syndrome and refers to the redundant use of one or more of the words that make up an acronym or initialism with the abbreviation itself,thus in effect repeating one or more words.Usage commentators consider such redundant acronyms poor style and an error to be avoided in writing,though they are common in speech.
* ATM machine (Automated Teller Machine machine)
* CSS style sheets (Cascading Style Sheets style sheets)
* HIV virus (Human Immunodeficiency Virus virus)
* ISBN number (International Standard Book Number number)
* PIN number (Personal Identification Number number)
* UPC code (Uniform Product Code code)
大意:這種問題叫做RAS syndrome.用于書面語是錯誤的,口語比較常見.
來源:好像被屏了..打不出來