He was shot in what seems to have been a case of mistaken identity.

他像是被人认错了而遭到枪击的。

《牛津词典》

What you have left is one image open with your multiple layers, in my case 3, each layer containing exactly the same shot just taken with a different exposure all sandwiched on top of each other.

你现在有的是一个有着好几个层的图片，我的例子是3个层，每个层有一个不同曝光的但是拍摄同样景物的图片，他们象三明治一样一个叠在另一个上面。

youdao

Decision problems may be one-shot, in which case only a single decision is to be made, or repeated, in which case the computer may need to make multiple decisions.

决策程序可能是一次性的，在这种情况下仅仅需要作出单一的决定，也可能是重复的，在这种情况下计算机可能需要做出多重决定。

youdao