一些国家已经在着手制定本国关于控制和减少教室噪音的标准。

A number of countries are already in the process of formulating their own standards for the control and reduction of classroom noise.

youdao

Bill Evers：“我们任职于华盛顿特区，对美国公立学校，教室里所发生的事情的控制和决定得太多，监督和指导得太多。”

BILL EVERS: "We are having Washington, DC, having control and final say over, and supervision over and direction over, what is happening in the classrooms of America, in the public schools."

youdao

问题来了，在实验室控制环境下得出的结果能否也适用于教室这种难以人为控制的环境呢？答案是肯定的。

The question was, would this result translate from the controlled circumstances of the laboratory to the unruly environment of the classroom?

youdao