相机发出嗡嗡声和喀嚓声。
在向上滑动显示屏以露出拇指键盘时，没有发出弹簧助力的喀嚓声；拉动的动作就像是在犁地。
When you slide the screen up to reveal the thumb keyboard, there's no spring-assisted snap; it drags like a plow through soil.
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)。
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).
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