他们非常善于传播声音。
风传播声音。
但这些音乐厅的内墙都有很多装饰，很多水泥装饰物，比如雕像，这些装饰物能有效传播声音，从不同方向反射声音。
But they all have a lot of decorations on the walls inside, lots of ornamental plasterwork like statues, which distribute sound very efficiently, reflecting it in all different directions.
真空中没有物质，不能传播声音。
A vacuum, which is the absence of matter, cannot transmit sound.
空气是传播声音的媒介物。
空气是传播声音的媒介。
空气传播声音。
软质材料如布，不像铁和其他固体那样好地传播声音。
Soft material, such as cloth, does not carry sound so well as iron and other solid.
风传播声音。
电视电话和激光电话优于现有的电话，可以沿着光纤组成的电话线同时传播声音和图像。
Superior to the existing telephones, the videophone, or laser phone, can transmit voice and image simultaneously along its telephone line which is made of optic fiber.
空气声隔声是对空气传播声音的隔绝，房间之间空气声隔绝的性能是评价室内环境私密性的重要指标。
Airborne sound insulation is separation capability of air-borne sound, and the performance of airborne sound insulation between rooms is an important criterion of privacy.
但由于各种原因，我国的对外传播声音还比较弱，影响力还不够，英语新闻网站本应发挥的作用还没有发挥出来。
However, for various reasons, China's voice can hardly be heard and it's medias has little influence in the world. English news website should play a more important role.
月球上没有空气，声音难以传播，但是“你可以利用尘埃来传播声音，看看在月球表面唱歌听起来如何，”Jain说道。
There is no air on the Moon to transmit sound waves, but “you could play it through the dust and see what it sounds like when you play it right on the surface,” Mr.
月球上没有空气，声音难以传播，但是“你可以利用尘埃来传播声音，看看在月球表面唱歌听起来如何，”Jain说道。
There is no air on the Moon to transmit sound waves, but “you could play it through the dust and see what it sounds like when you play it right on the surface,” Mr.
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