1. 作者;著作者
    The author of a piece of writing is the person who wrote it.

    e.g. ...Jill Phillips, author of the book 'Give Your Child Music'.
           吉尔·菲利普斯，《给孩子音乐》一书的作者

2. 作家
    An author is a person whose job is writing books.

    e.g. Haruki Murakami is Japan's best-selling author.
           村上春树是日本当红的畅销书作家。

3. (计划或建议的）筹划者，制定者
    The author of a plan or proposal is the person who thinks of it and works out the details.

    e.g. The authors of the plan believe they can reach this point within about two years.
           该计划的提出者相信他们约在两年内可以达成该目标。

4. 创作；撰写
    To author something means to be the author of it.

    e.g. Then he opened a restaurant, authored a book, and landed his own radio show.
           后来他开了个餐馆，写了本书，还制作了自己的广播剧。
    e.g. ...a proposal authored by subcommittee chairman Quentin Burdick.
           专门小组委员会主席昆廷·伯迪克提出的建议

5. see also: co-author