There are 2 radiologic signs of dural ossification, namely, the tram track sign and the comma sign.

硬膜骨化有2个影像学征象，即轨道征和逗点征。

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The frieze was to be destroyed at the end of the 1902 exhibition, but it was stored instead, in a shed next to a tram track where it was damaged before its restoration in the 1970s.

1902年展会结束之际，这个壁画本该要被摧毁的，但它却在煤车铁轨旁的一个小屋里被保留了下来，作品在那里受到了损坏，到了20世纪70年代才得到修补。

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The tram is being switched on to another track .

电车正被移至另外一条轨道上。

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