As its title suggests, London's geology is dominated by clay, along with sand and gravel in the river valley's bedrock.

正如书名所示，伦敦的地质以黏土为主，以及河谷基岩中的沙石。

But sand and gravel dragged at their feet.

但是沙子和砾石拖在了他们的脚下。

You mean you intend to take me driving on sand and gravel?

克劳迪娅：你的意思是你打算带我在沙石路上开车？

" Asphalt" is a mixture of tar, sand, and " gravel" (gravel), or small rocks.

“沥青”是焦油、沙子和“砾石”（砾石）或小石块的混合物。

And Fremier says when she builds it, she basically unpacks the stream bed, making all those loose sands and gravels more mobile.

弗莱米尔表示，雌性鲑鱼挖好洞以后会在河床上产卵，让所有散沙和碎石更易流动。

One of the solutions that we envisaged is that besides reducing ore, they would go  produce sand and gravel for local construction.

我们设想的解决方案之一是，除了减少矿石之外，他们还会生产用于当地建设的沙子和砾石。

Over the next five years the Scottish government is due to gain control of earned-income taxes, air-passenger duty and a levy on aggregates such as sand and gravel.

今后五年，苏格兰政府有望实现收入所得税、航空旅客税、使用沙土碎石等统一征收税的自主征收。

She sank back in her chair. If she could only be rid of her tight stays, the collar that choked her and the slippers still full of sand and gravel that blistered her feet.

她重新坐到椅子上，要是她能够把箍紧的胸衣，那让她感到窒息的衣领和仍然塞满沙粒和石子在她脚下磨起血泡的便鞋都脱掉，该多好啊！

The film employed 15 huge filming studios, and the crew laid 200 tons of sand and gravel in a 6,000-square-meter studio, striving to simulate lunar dust and build a lunar base in actual size.

团队租了15个大型拍摄场地，摄制组在一个6000平方米的工作室里铺设了200吨沙子和砾石，努力模拟月球尘土，并建造一个实际大小的月球基地。

Claudia says to Jae, " You mean you intend to take me driving on sand and gravel? " She's asking Jae if his plan is to take her driving on sand and gravel.

克劳迪娅对 Jae 说：“你的意思是你打算带我在沙石地上开车？”她问 Jae 是否打算带她在沙石路上开车。