The master, throned on high in his great splint-bottom arm-chair, was dozing, lulled by the drowsy hum of study.
老师高高地坐在他那把大细木条扶手椅上，听着催人入睡的读书声，正打着盹。
By comparing the intensity of the hum with the height of waves around the world, scientists can track where the buzz is coming from.
通过把全世界海浪高度和嗡嗡声的强度相比较，科学家能追踪到这种声音的来源。
Forget fancy maps charting world domination, or ambitious mission statements-a visitor today to BT's lobby is greeted by the modest hum of the staff canteen.
忘掉划分世界新势力的地图吧，也忘掉曾经慷慨激昂的壮志吧——今天BT的迎客大厅已经成为了员工食堂，低沉的嗡嗡声响彻其间。
Some babies may also be calmed by the sound of a running faucet, a radio set on static, a recording of nature sounds or white noise—even the steady hum of the vacuum cleaner.
有些宝宝听到水龙头流水的声音，无线电静电干扰的声音，自然界各种声音或白噪音的录音，甚至是吸尘器持续的嗡嗡声都会安静下来。
Some residents and visitors in the small city of Taos, New Mexico, have for years been annoyed and puzzled by a mysterious and faint low-frequency hum in the desert air.
美国新墨西哥州小城陶斯的部分居民和访客多年来一直为沙漠空气中一个神秘而微弱的低频嗡嗡声而苦恼和困扰。
What if the hum is not caused by the filaments?
如果哼声不是来自灯丝，那我该咋整啊？
A pause of some seconds succeeded, filled up by the low, vague hum of Numbers; Miss Miller walked from class to class, hushing this indefinite sound.
几秒钟肃静之后，响起了低沉而含糊的嗡嗡声，米勒小姐从—个班兜到另一个班，把这种模糊的喧声压下去。
My mother would hum as she waited by the stove for the water to boil.
我妈妈在等待炉上水烧开的时候会发出低声哼唱。
Some residents and visitors in the small city of Taos, New Mexico, have for years been annoyed and puzzled by a mysterious and faint low-frequency hum in the desert air.
多年以来，美国新墨西哥州小城市陶斯的部分居民和访客一直被沙漠空气中一种微弱的低频噪声所困扰。
That filtering works in a similar way to noise-cancelling headphones, which cancel out background noise by playing a similar frequency to ambient sounds, such as traffic or aeroplane hum.
这种过滤原理跟抗噪耳机差不多，就是通过播放跟环境声频率接近的声音来抵消背景噪音，比如交通或者飞机声。
Line frequency hum, primarily induced by imbalance in the filament circuit wiring, the transformer used to power the filament, coupling into the signal leads, etc.
市电频率Hum，主要原因包括灯丝线路走线导致的不平衡；供给灯丝的电源变压器（缺陷）导致电源杂波耦合进入信号通道，等等。
Line frequency hum, primarily induced by imbalance in the filament circuit wiring, the transformer used to power the filament, coupling into the signal leads, etc.
市电频率Hum，主要原因包括灯丝线路走线导致的不平衡；供给灯丝的电源变压器（缺陷）导致电源杂波耦合进入信号通道，等等。
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