Teachers must keep a record of students' attendances.

老师必须记录学生的出勤情况。

《牛津词典》

Teachers must put the brakes on, as it were, when they notice students looking puzzled.

当老师发现学生神色茫然时，就应该在一定程度上放慢速度。

《牛津词典》

The teachers must be free to teach in their own way—the curriculum should be flexible enough so that they can use their individual talents to achieve the goals of the course.

教师必须可以自由地以他们自己的方式教学——课程应该足够灵活，这样他们就可以利用他们的个人才能来实现课程目标。

youdao

Teachers must be seen not only as schoolmasters but also as mentors, who can give their pupils psychosocial support.

UNESCO: MEDIA SERVICES

At present, physics teachers must also qualify to teach chemistry or biology.

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There is no reason teachers must disarm themselves to perform their jobs.

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