正是由于这种集声，即使是海洋中相对微弱的声音，尤其是低频声音，也能传播数千英里。
This focusing is the main reason that even relatively weak sounds in the ocean, especially low-frequency ones, can often travel thousands of miles.
大多数流行歌手都存在三个问题：缺乏训练、过度用嗓以及滥用声音，尤其是在他们年轻的时候。
Most pop singers suffer from three things: lack of training, overuse and abuse of the voice, especially when they are young.
所有这些不同寻常的声音所产生的心理影响可能是深远的，尤其是当它们看起来与击鼓或诵经的人如此脱节的时候。
The psychological effects of all these extraordinary sounds can be profound, especially when they seem so disconnected from the human doing the drumming or chanting.
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