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1·What kind of camera are you looking for, single lens reflex(SLR) or snapshot cameras?

你要哪一款照相机呢？单镜反光机还是全自动机？

2·The Polaroid SX-70 was the first autofocus single-lens reflex camera, released in 1978.

宝丽希凯sx - 70是第一个主动对焦单镜头反光拍照机，于1978年发布。