7 个月
The Cool Down on MSNResearchers sound alarm over unexpected side effect of everyday noise: 'Important for us ...Loud sounds can be disturbing in themselves ... The underwater world is also getting noisier, since sound travels more ...
it seems quite loud. Moving away from the clock, the alarm sounds quieter, so the distance from the source of a sound will affect how loud it seems. Students could follow this clip with a game to ...
People living near Land's End have been advised to buy earplugs due to a lighthouse's broken fog alarm. Longships Lighthouse has been sounding a loud beep every 13 seconds for the past week.
一些您可能无法访问的结果已被隐去。
显示无法访问的结果