hum noise measurement

例句：

1. 1. The hum of the traffic is distracting me from my work.
   交通的嗡嗡声让我无法专心工作。
2. 2. The hum of the engine was so loud that it drowned out all other sounds.
   引擎的嗡嗡声太响了，以至于其他所有的声音都被淹没了。
3. 3. They conducted a thorough hum noise measurement to determine the cause of the problem.
   他们进行了彻底的嗡嗡声测量，以确定问题的原因。