Cresswell said his students tell him they do not even notice his gun anymore.

克雷斯韦尔说，他的学生告诉他，他们甚至都不再留意他的枪了。

Cresswell keeps his gun with him at all times: in his classroom, at sporting events and whenever he is at school.

教室内或是体育比赛中，无论何时出现在学校里。

Cresswell and other teachers and school officials all had criminal history investigations and psychological tests before being permitted to carry a gun at school.

克雷斯韦尔和其他教师以及学校官员在获准持枪进入学校前，都接受了犯罪史调查和心理测试。