That was a camera shutter.

那是照相机快门声。

youdao

Mute camera shutter sound.

一把拍摄声音设为静音。

youdao

The card scratches one, is not the camera shutter sound.

卡擦一声，不是相机快门声音。

youdao

Speaking of which, we were delighted by the fact that both phones feature a dedicated camera shutter button.

ENGADGET: T-Mobile myTouch and myTouch Q coming August 8th for $50, we go hands-on

The convenient Satechi BT Media Remote has a remote camera shutter button so users can take photos without leaving themselves out of the camera.

ENGADGET: Satechi BT Media Remote steers your iOS media habits, summons Siri via Bluetooth

Another feature, called HTC Zoe, captures short high definition videos instead of still images before and after the camera shutter is pressed, so that users can chose the best picture to capture the moment.

BBC: HTC unveils revamped HTC One flagship Android smartphone