To get there they had to chisel away a concrete cell wall, and, of course, it had to be done slowly and on the QT.

为了到达这个通风口，他们必须凿穿一堵混凝土墙，当然，必须缓慢而秘密地进行这个工作。

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I was falling asleep on the floor when I felt a low harmony echoing up through the concrete of the cell next door.

我正睡在地上，听到从隔间的水泥墙壁中传来一曲低沉且和谐的旋律。

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Making bridge panel concrete with the air cell inner form may quicken the precast bridge panel construction pace, ensure the project quality and drop construction cost.

采用气囊作内模进行浇筑桥面板混凝土，加快了预制桥面板施工进度，确保工程施工质量，并降低了工程施工成本。

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Hopefully Stephen's story can make a difference to them and others who are currently sitting in a concrete cell 23 hours a day.

CNN: STORY HIGHLIGHTS

A. wrongly accused of being a double agent and held for three years in total isolation (no reading material, no news, no human contact except with interrogators) in a closet-size concrete cell near Williamsburg, Virginia, made chess sets from threads and a calendar from lint (only to have them discovered and swept away).

NEWYORKER: Hellhole

The cell is a small, windowless room painted a nondescript beige, with a gun-metal gray floor and concrete sleeping platform.

CNN: Tour of prison reveals the last days of Saddam Hussein