As you move around the chamber, the volume of the sound goes way up and way down, depending on where you are in these standing waves.

当你在房间里移动的时候，声音的音量会上升或下降，这取决于你在这些驻波中的位置。

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In the first six months of 2009, business travel spending is down by 12.5 percent and business travel volume is down more than 6 percent.

2009年上半年，美国商务旅游支出下降了12.5%，差旅数量减少超过6%。

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Turn off the phone ringer, and turn down the volume on the answering machine.

关掉电话响铃，调低答录机的音量。

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We have to wait until the big-volume down days end and we start getting some upside progress on heavy accumulation.

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Investors are likely to be extremely wary of new signs of volume growth slow-down and price pressure in the smartphone market over the coming months.

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Acquisitions accounted for 14% of total middle-market volume, down from 21% in the second quarter.

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