A fire drill will be conducted in your residence hall every semester.

每学期都会在宿舍楼进行一次消防演练。

This is not a fire drill—it's for real.

这不是救火演习—是真失火了。

Execute a fire drill and report.

进行消防演习并报告。

This is not a fire drill .

这不是消防演习。

A fire drill interrupted the lesson.

一场火警演习中断了上课。