AP
noun [ U ] trademark uk/ˌeɪˈpiː/ us/ˌeɪˈpiː/
大学先修课程（Advanced Placement的缩写）
abbreviation for Advanced Placement (= a program for students offering courses that are equal to college courses)
Students' decisions to either take or avoid AP courses have fundamental effects on their college attendance. 学生选择是否学习大学先修课程对大学入学有着根本的影响。
美联社（美国联合通讯社，Associated Press的缩写）
abbreviation for Associated Press: a US news organization