入耳式耳机比头戴式的更好，因为它们可以阻隔更多的外界噪音。
In-ear headphones are better than over-the-eat ones because they can stop more outside noise.
他们希望有一天他们能够操控这种阻隔环境噪音的能力，以使浅睡者能够获得更好的睡眠质量。
They hope that one day they will be able to manipulate this ability in order to give lighter sleepers a better night's rest.
这样既通透又能起到阻隔作用，还非常隔音，厨房里的噪音外面根本听不见。
This will not only transparent but also play a blocking role, but also very sound, the kitchen can not hear the noise outside.
地面层的车库同时也是阻隔主街道噪音的隔音屏风。
The garage on the ground floor serves as a noise barrier toward the busy main street.
总所周知的“睡眠纺锤波”是一种脑波，它能为睡眠中的人阻隔外界的声音，使人即使听到一连串的噪音也不被吵醒。
Certain brain waves, known as sleep spindles, play a key role in blocking out sound during sleep, allowing people to stay asleep through a barrage of noises.
我们在地铁上经常看到那些人为了阻隔外界环境的噪音，长时间地把iPod和MP3播放器的音量调到很大。
We see people on subways 12 blasting iPods or MP3 players for extended periods of time to block out the environmental noise.
我们在地铁上经常看到那些人为了阻隔外界环境的噪音，长时间地把iPod和MP3播放器的音量调到很大。
We see people on subways 12 blasting iPods or MP3 players for extended periods of time to block out the environmental noise.
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