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- The water is infiltrating the gravel bed. 水正渗透进碎石底层。
- A stretch of damaged track ran about 150 yards along the accident site, ties ripped from the gravel bed and the rails twisted. 损坏的铁轨一直延伸到距事故地点150码远处，沙砾层上的固定结裂开了，铁轨也扭曲了。
- In the meanwhile, the result also show that the section configuration and near watercourse characteristic has influenced gravel bed load transport rate. 河床断面形态及其相邻河道特性对输沙率也有较大的影响。
- Biofilm decompose on the surface is the primary removal mechanism.The gravel bed subsurface constructed wetland was used to investigate the removal efficiencies of SS, NH4+-N, BOD5, and PO43-. 于关渡取用旧贵子坑溪溪水，为接触曝气及地下砾间处理复合式人工湿地，主要之污染去除机制为生物膜对污染质之分解。
- Our constant flow gravel bed system grows lettuce about 20% better than a reciprocal flow.Gravel beds and floating rafts are about 15-20% more efficient than NFT. 我们采用连续流砾石植床种的莴苣的产能比间歇灌溉的系统高出20%25，砾石植床与浮板与NFT高出15-20%25的效率。
- The ancient gravel beds in the suburbs of Nanjng is one of the important types of rock of the Cenozoic era. 南京附近的古砾石层是组成该区新生代地层重要岩石类型之一。
- The Neogene deposits with hominoid fossils in the Xiaohe - Leilao area, Yuanmou, Yunnan, are a se-quence of purple pebbly fine sandstone-siltstone with several yellow gravel beds. 云南元谋小河-雷老一带含古猿新近系（上第三系）是一套紫红色含砾细砂-粉砂岩，夹有多层黄色砂砾石层。
- Test and study on AYT type of gravel bed load sampler AYT型砾卵石推移质采样器试验研究
- The brook warbled over its rocky bed. 小溪潺潺流过多石的河床。
- My father scratched gravel for Shanghai last night. 我父亲昨晚匆匆忙忙去了上海。
- The prospector panned out bits of sand and gravel scooped from the bed of a stream. 探矿者淘选从河床里挖出的少量含金泥沙和砂砾。
- The road is covered with gravel. 这路用砾石铺成。
- She rushed off to work leaving her bed unmade. 她匆忙去上班连床都没铺好。
- We bumped up and down along the gravel path. 我们沿砾石小路颠簸而行。
- Aerodynamic Roughness of Gravel Beds 砾石床面的空气动力学粗糙度
- A mosquito netting completely surrounds our bed. 一顶蚊帐把我们的床完全围住了。
- It was hard work getting the children off to bed. 哄孩子们去睡可不是容易的事。
- I threw off my clothes and tumbled into bed. 我脱掉衣服倒在床上便睡了。
- I usually go to bed at half past ten. 我通常十点半睡觉。
- The gravel ingredient of concrete. 石碴组成混凝土的砂料
