Suddenly I heard a low noise behind me.

突然，我听到身后发出了低沉的声音。

Its advantages include a strong climbing ability, smaller turning radius, lower noise levels and zero magnetic pollution.

其优点包括爬坡能力强、转弯半径小、噪声低、无磁污染等优点。

These days Aiello hears more ringing up of checks and says the lower noise levels are good for business.

这些天，Aiello听到的更多是支票的声音，他表示较低的噪声水平有利于做生意。

Suddenly he heard a low, growling noise.

突然，他听到低沉的咆哮声。

All she could hear was the occasional low buzzing noise from some instrument.

她所能听到的只是某种仪器偶尔发出的低沉嗡嗡声。

'I don't like it! ' said Phyllis. There was a low noise on the railway line.

“我不喜欢！”菲利斯说。铁路线上传来低沉的声音。

A " frog" is a small animal – a green animal that jumps and makes a very low sounding noise.

。 “青蛙” 是一种小动物——一种会跳跃并发出很低声音的绿色动物。

The cab is integrally sealed to effectively isolate the noise and lower the driver's parotid noise to parotid noise to 80dB, which meets the EU regulation.

驾驶室整体密封， 有效隔离噪音， 将驾驶员腮腺噪声降低至80dB，符合欧盟规定。

" This is the perfect means of transportation, something that can take off and land everywhere, " Mr. Wiegand said. " It's very fast, very efficient and low noise" .

" 这是一种完美的公共交通方式，随处可以起落，" Wiegand 说，" 快速，高效，噪音也小。"

It has a simplified power module cooling package, engine, PTO, and hydraulic pumps that allows for easy access to major components, low noise levels in the cab, and reduced labor hours when scheduled maintenance is performed.

它具有简化的功率模块冷却套件、发动机、取力器和液压泵，可轻松检修主要部件，驾驶室噪音低，并减少执行计划维护时的工时。

You may not realize this because it is so much a part of " normal" living, just as you are not aware of a continuous low background noise, such as the hum of an air conditioner, until it stops.

你可能没有意识到这一点，因为它是“正常”生活的一部分，就像你没有意识到持续的低背景噪音，比如空调的嗡嗡声，直到它停止。