除了保护特殊镜头的质量，这款照相机有一个限制框可以让你在35 mm的胶卷上拍正方形的照片——或者想它的老同志那样让画面周围有一圈暗角。
In addition to maintaining idiosyncratic lens quality, the camera has a framing mask that lets you shoot square photos on 35-mm film-or even bleed the image to the edge like its old comrades.
在风浪较大的湖上，他们在湖底放置方形木料框，给木桩奠定更加坚实的基础。
On stormier lakes, they made stronger bases for the pilings by placing square log frames on the lake bottom.
这里蜂巢布满整个长方形的巢框(像个纱窗)。
Fill up entire frames (like a window screen) and are rectangular.
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