Two young men were racing motorcycles on the loose gravel.
两个小伙子正在松散的砾石路面上赛摩托车。
More gravel is needed to fill the hollow in the drive.
需要更多的砾石来填平车道上的坑洼.
Gravel is much used for road - making.
砾石常用来筑路.
It is wise to start infilling with a layer of gravel for drainage.
先铺上一层利于排水的砾石是个明智的做法。
The driveway gravel crunched underneath our sneakers.
车道上的砾石被我们的旅游鞋踩得嘎嘎作响.
The host rock conformably overlies a band of siliceous chertybrecia.
含矿主岩整合地上覆于硅质燧石角砾石带之上.
Gravel banks along rivers are always light or white.
河流的砾石滩始终为浅色或白色.
Sandstone and conglomerate are the consolidated equivalent of sand and gravel.
砂岩和砾岩分别是砂和砾石固结的产物.
In the extreme case the boxwork collapses, forming a breccia.
在特殊情况下,蜂窝坍塌, 形成角砾石.
Sand and gravel may form bars within the channel.
沙和砾石可以在沟槽内形成沙洲.
The road is covered with gravel.
这路用砾石铺成.
Tar is a binder for gravel in paving.
在铺路时柏油用来粘结砾石.
They may form concentrated pockets in gravels.
它们可能在砾石堆积物中形成富集的矿囊.
The components to be considered in this book include boulders, gravel, sand, silt and clay.
本书所考虑的组成部分包括漂砾, 砾石, 砂, 粉土和粘土.
The boat continued to advance, until its bows grated on the gravel of the beach.
小舟继续前进, 船头终于触到了砾石滩.