android sqlite 多条件删除的语句怎么写？

比如我要删除一条name = a ，age = b 的数据，
db.delete（）的参数应该怎么写？？

  .delete(DATABASE_TABLE,
            "KEY_DATE=? AND KEY_GRADE=? AND KEY_STYLE=? AND KEY_PUMPLEVEL=?",
            new String[] { "date", "style2", "style", "pumpLevel"});

db.delete("person", "name =? and age = ?", new String[]{"a","b"});