crushed rock

基本解释

Crushed rock layers are distributed widely in periglacial environment.
碎石層在冰緣地區有廣泛分佈。
Macadam type bases involving successive layers of crushed rock bound with rock dust were also used.
人們曾經使用“石結”基層——幾層由石粉黏結在一起連續的碎石層。
An analysis carried out by the probe, which landed on May 25th, suggests the local regolith (the crushed rock that passes for soil on Mars) is slightly alkaline—which such vegetables prefer.
在5月25日著陸的探測器完成了一項分析，分析表明表層土壤（在火星上，被壓碎的巖石被稱爲土壤）略呈堿性，而這些堿性土壤正適郃上述的那些植物生長。

It is made from a blend of crushed rock, rubber and polyurethane, a synthetic plastic that replaces bitumen as the binding agent and allows even bigger pores in the road surface.
ECONOMIST: Quieter traffic: When the rubber hits the road The
Right now, I believe I would lie down for him in any bog or mucky hole or feel my spine crushed against any roadside rock, should he require an upright encounter.
NEWYORKER: Amundsen