单词age-of-discretion
na.: 责任年龄网络: 解事年龄；是非年龄；辨别是非的年龄
My sister, though many years younger than I, is at least old enough to be at the age of discretion.
尽管舍妹比我年轻得多，她至少也到了明辨是非的岁数。