two-way ramp

If you build a ramp with a slight slope up to the top of a Pyramid that's over 130 meters high, it would have to be almost two kilometers long.

如果你要建造一个抵达金字塔顶130多米高的缓坡坡道，那么它几乎是两公里长。

You access the raised platform of the church yard via a ramp from the east or three broad flights of steps from the west; the two landings correspond to the layout of the city streets.

从东面或者从西面经过三个大踏步，经由一个斜坡，到达教堂的院子中的升起的讲坛，两个楼梯平台都与城市街道的设计非常吻合。

In passing the two big shut doors adjacent to the last ramp I had another weird feeling of certainty and realization22: this was a hospital ( we already know that.) This basement used to be the morgue.

我屏住呼吸向下走去，当走过与这个斜坡紧挨着的那两扇门时，我又有了诡异的感觉：这儿原来是家医院（这我们已经知道了），这地下室以前是个停尸房。

Experimental investigation on selecting ramp and lip parameters of two-dimensional external compression inlet

二元外压式进气道斜板和唇口参数选择的风洞试验研究