When cubs are hungry, they produce a grating fingernails-on-blackboard sound, with their lips pulledback from their teeth, to encourage their mother to lie down so they can nurse.

当幼仔饥饿时，它们会将嘴唇向牙齿后拉，发出指甲挠抓黑板般的尖锐叫声，以促使它们的母亲躺下来喂奶。

youdao

There was an open grating above it, through which came the sound of men's voices, mingled with the noise of hammering, and the throwing down of boards.

门的上方有一个敞开的格子窗，窗外传来七嘴八舌的说话声，其中还混杂着榔头起落和木板掉在地上的响声。

youdao

For some time there was no noise but the grating sound of the spades discharging their freight of mould and gravel.

有一段时间，只能听到他们一锹一锹抛泥土和石子所发出的嚓嚓声响。

youdao

Travelling by train in the central mountains, there's a sudden jolt and a terrible grating sound.

BBC: Peru's famous yarn