At this stage no light has entered the camera, as the front curtain is still closed.

由于前帘呈闭合状态，在此过程中并没有光线进入相机。

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For such short exposures, the rear curtain starts to fall, covering up the sensor before the front curtain is even fully open.

在这样短的曝光下，后幕帘落下，在前幕帘完全打开前遮蔽感光元件。

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The front curtain drops away, revealing the sensor behind, and allows the light to enter the camera, beginning the exposure.

前幕帘落下，后方的感光元件露出，光线进入相机，曝光开始。

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On NYLA's wide and shallow stage, outfitted for the occasion with a front curtain to give the appearance of a proscenium, and set austerely as if against a low horizon (by Akiko Iwasaki, who also designed the costumes), "Bell" unfolds more as a patchwork than as an authoritatively layered or structured presentation.

WSJ: Giselle at the D?j?ji Temple | Yasuko Yokoshi | Bell | New York Live Arts | By Robert Greskovic

So, as an alternative, it has decided to run 30-minute videos in some Super Tuesday markets that feature the former speaker talking in front of a blue curtain.

WSJ: Gingrich, Struggling, Gets More Freewheeling

He created a stage-wide frieze in front of the house curtain for 11 of his puppeteers to animate the program's second work, Stravinsky's 1920 "Pulcinella" (here in its later suite form).

WSJ: A Puppeteer's 'Rite' of Passage | Basil Twist | By Robert Greskovic