teachers and students ;
例句:
It included the staff-student ratio as a measure of teaching quality.
它把 师生 比例作为衡量教学质量的一种方式.
TEACHER : Let's write some key words of the answers on the blackboard.
师生共同寻找答案中的关键词并板书在黑板上.
The magician a fire, and then he threw some powder on it.
魔术师生了火, 接着在火上面洒了一些粉末.