The cameras take a photo every time you open the fridge to show what's being used and what you are about to use up.
每次你打开冰箱的时候，这些相机都会拍下照片，显示冰箱里已经用过的东西和即将用完的东西。
It's as good as my manual film cameras: no surprises between me and a great photo.
它就像我的手动胶卷相机一样好：使我得到一张好照片变得如此的容易。
He tried using different cameras, but the screens went blank whenever he tried to take a photo.
他试着用不同的照相机，但是当他想要拍照片的时候，屏幕就变成空白的了。
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