You can adjust the volume all at once or room by room.

您可以一次性调节各处的音量，也可以一个一个房间分别调节。

youdao

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.

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。

youdao

Take it 15 minutes at a time, room by room.

每次花15分钟，从一个房间到另一个房间。

youdao

But this home contains over 2,000 pieces of art organized from room to room by period and by geography.

VOA: special.2009.01.11

4 So even if the correct mathematical answer is 1.4 or whatever, when you divide an int by an int, you only have room in that variable, in the response for an actual integer.

所以即使那个正确的答案是4,或别的数值，当你用一个整型数除以一个整型数，在那个变量的返回值里，只有,存储一个整型数的空间。

哈佛公开课 - 计算机科学课程节选

what would it mean to read this letter out loud in a community, not alone in your dorm room,or just by yourself,in the library?

为什么书信要在人群中大声朗读，而不是在寝室里，图书馆里一人看？

耶鲁公开课 - 新约课程节选

China also has the largest number of hotels (by room count) in the pipeline.

BBC: The rise of China��s secondary cities

Obama followed by a room-by-room audio description of the highlights and features of the White House.

WHITEHOUSE: Our Top Stories

He and his brother clean every inch of this hellish place, and the reader is forced to share the experience, room by room.

NEWYORKER: Total Recall