铁路路基;
A bed on which railroad track is laid.
用来支撑铁路路轨的路基。
To fill ( a railroad bed ) with or as if with ballast.
铺沙石用或似用沙石铺 ( 铁路路基 )
Greece actually has two systems& with different gauges. a bed on which railroad track is laid.
希腊铁路实际上有两种,铁轨的轨距不同。用来支撑铁路路轨的路基。
A railroad, on its raised bed, can be seen amidst the water.
在水中可以看到建在地上河床上的铁路.
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