1 happening or done once a year or every year 一年一次的: the company's annual report公司的年报an annual festival一年一度的节日
2 for the period of one year 一年的: What's the average annual salary for a nurse?护士的平均年薪是多少？the annual sales figures年度销售数字 ➔annuallyadv
annual²
/ˈænjuəl ||; ˈænjυəl/noun [C] a book, especially one for children, that is published once each year 年刊，年鉴，年报（尤指每年一次为儿童出版的书）: the 1999 Football Annual1999年足球年刊