The main ore-bearing structure are the interlayer-gliding fracture zone, contact area of rock mass and fracture structure, which controlled the shape and the occurrence of orebody.

层间滑动破碎带、岩体接触面和断裂构造是主要的含矿构造，它控制了矿体的形态和产状。

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The 1880s saw a shift from Nordic skiing (cross-country skiing), to Alpine skiing (downhill skiing), because the adrenaline rush of gliding down a mountainside had more mass appeal than skiing across level terrain.

BBC: Where did skiing come from?