这些（噪音）可以是穿透教室建筑结构的室外活动声、教学活动的声音以及室内产生的其它各种声响，这些声音都会因为房间的回声效果而被放大。
These levels come from outside activities that penetrate the classroom structure, from teaching activities, and other noise generated inside, which can be exacerbated by room reverberation.
公寓有白墙和轻木门，以及室内百叶窗。
The apartments are finished with white-painted walls, and light wooden doors and internal shutters.
很难否认禁止在公共场合以及室内场所吸烟已取得了显著成效。
It's hard to deny that banning smoking in public, indoor Spaces has been a huge success.
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