Normally, on a groomed moderate pitch these skiers draw continuous parallel and equally deep trenches similar to the ones depicted below.

通常，在中等坡度的机压雪道上，这些滑雪者会留下连续、平行且深度一致的轨迹，如下图所示。

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I always put on topics like a painting like before, again to draw line, until the entire picture comes out slowly. This need long-term peaceful and continuous meditation.

我始终把思考的主题像一幅画般摆在面前，再一点一线的去勾勒，直到整幅画慢慢的凸显出来。这需要长期的安静与不断的默想。

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So we need to design a program to improve the function and draw the relevant changing curve to optimize the function of the continuous elevation machine.

故建立适当的数学模型，然后编写程序对其进行优化，并绘制了相应的变化曲线，来实现连续提升器。

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