I came to a high place of darkness and light.
我来到一块黑暗与光明并存的高地。
Especially suitable for difficult and expensive to light the place, as well as the safety requirements and an important place for the high.
特别适用于换灯困难且费用昂贵的场所以及对安全要求及高的重要场所。
This structure uses the high strength material as its shell, the light material is positioned in the place easily sinking and sliding, and the loose material is filled in the body of the embankment.
该结构采用高强度材料作为外壳，以轻质材料放置于易沉滑的部位，以松散材料填充坝体。
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