The Lijiawa mine's single shaft was no secret.

李家洼煤矿的单矿井并非秘密。

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Drawworks adopts single shaft gear transmission structure, which is simple and reliable.

绞车为单轴齿轮传动结构，传动结构简单、可靠。

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A single shaft of daylight shown permeating through the centre of the building is intended as the only natural light source within the monument.

显示的单光束在作为纪念碑内唯一的自然光源，通过建筑中心渗入内部空间。

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Inside, in a space not much bigger than a three-car garage, was a single shaft-painting machine, a work station where clubs were cut to size and grips attached, and racks containing 40, 000 to 50, 000 shafts and 5, 000 clubheads.

WSJ: Psst��Wanna Buy a Counterfeit Golf Club? | Golf Journal by John Paul Newport

In one of the most powerful scenes from the show Mad Men, Don Draper stands in a darkened boardroom, a single shaft of light beaming onto a screen as he delivers the pitch of a lifetime to executives from Kodak.

FORBES: Moving Healthcare from the 'Mad Men' Era into the Big Data Age