单词学习：err 动词
err
/ɜːr/
犯错；出错
To err is human, and even Mr. Gu, our respected teacher, admits that he sometimes makes mistakes in class.
人非圣贤，孰能无过，就连我们尊敬的顾老师也承认他有时会在课堂上出错。
单词卡片
卡片已就绪
