abbr.United States Armed Forces Institute 美国武装部队业余进修学院
The word "undertaker" had long been in common usage.
undertaker一词早已广泛使用。
It's not a word in common usage .
这不是一个常用词。
The wrong pronunciation of the word is sanctioned by public usage.
人们接受了这个字的错误读法,因为大家都这样念.