That was a camera shutter.

那是照相机快门声。

youdao

Note: the Virtual Shadow in the middle of the right side in the photo is a result of failure due to the camera shutter.

注：照片右半部中间虚影条是因相机快门故障所致。

youdao

Note: the Virtual Shadow in the middle of the right side in the photo is a result of failure due to the camera shutter.

注：照片右半部中间虚影条是因相机快门故障所致。

youdao