Mirror lock-up (MLU) is a feature available in some SLR cameras which aims to minimize camera shake induced by mirror-slap (which produces the characteristic snapping sound of SLR cameras).

有些单反相机具有反光镜锁定(MLU)功能，可以减小镜面翻转造成的相机抖动(这也是单反相机经典“喀嚓声”的来源)。

He was about to lock the door when he heard a strange sound.

他正要锁门，这时听见了一个奇怪的声音。

Your situation does not sound like a gimbal lock.

你的情况听起来不像一个万向节锁。

Turning his head at the sound of familiar footsteps, the grad student realizes that he did not properly lock the bathroom door.

听到熟悉的脚步声，博士生转过头，意识到自己没有锁好门。

It also USES "adaptive filtering" technology, where electronic filters lock onto sound waves and remove them, even if the wave's amplitude and frequency change as the drill is being used.

该设备还采用了“适应滤波技术”。即便声波的振幅和频率在牙钻使用之时发生了变化，电子滤波器仍能锁定声波并将其转移。