1
use crushed rock as [noun]
强调用途
We use crushed rock as a base for driveways.
我们使用压碎岩作为车道基层。
碎石
先理解核心含义，再看它在真实句子里的用法。
碎石
crushed rock
We use crushed rock as a base for driveways.
我们使用压碎岩作为车道基层。
The garden path is covered with crushed rock so it drains well after rain.
花园小径上铺了碎石，所以雨后排水良好。
Workers spread crushed rock over the muddy road to make it passable.
工人们把碎石铺在泥泞的路上，让它能够通行。
We bought a bag of crushed rock for the base of the birdbath.
我们买了一袋碎石，用来做鸟浴盆的底座。
强调用途
We use crushed rock as a base for driveways.
我们使用压碎岩作为车道基层。
被动语态常见
Crushed rock is used for landscaping.
压碎岩用于景观美化。
表示铺设
They spread crushed rock over the path.
他们在小路上铺压碎岩。
Not this
We need rock crushed for the path.
Use this
We need crushed rock for the path.
英语中，形容词通常放在名词前，而“crushed”是过去分词作定语，应前置。中文常受“名词+形容词”语序影响而犯错。
Not this
The driveway is made of crush rock.
Use this
The driveway is made of crushed rock.
“crush”是动词原形，不能作定语；应使用过去分词“crushed”表示被动和完成状态。
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建筑材料
Dictionary facts from ECDICT.