You need to dig under the clay soil layer.
你需要在粘土层以下挖掘。

Numerical analysis on pore pressure of clay under shock load.
冲击荷载作用下粘土孔隙水压的数值分析

The effective unit weight analysis of the plastic clay under water
水位面以下可塑状态粘性土有效重度取值分析

I bet you the money is under the rock. I'm going to dig in the clay.
我跟你打赌钱就在石头下面, 我要把它挖出来。

Cumulative plastic strain of saturated soft clay under cyclic loading
循环荷载下饱和软黏土的累积塑性应变试验研究

River banks often have clay about one meter or less under the surface.
河边土壤下一米或更浅处经常有粘土。

River banks often also have clay about one meter or less under the surface.
河床下一米或不到一米得地方也出产黏土。

He was making a horse out of the clay that our teacher kept under the sink.
他在用老师放在水池下的陶土 做一匹马

Drivable Test of Riser under the Interaction of Group Piles in Sea Floor Clay
海底土条件下群桩可打性试验研究

Model Test on Pile Bearing Behaviors in Clay Under Different Pile Tip Conditions
粘土中不同桩端条件下桩承载性状的模型试验

These globs of glass were discovered to be clay pots that had melted under intense heat!
这些玻璃粒被发现是处于极热融化之下得黏土里!

Study of Characteristic of Claycrete Clay Soil Stabiliser Improved Soil Under Thawing Condition
冻融条件下奇极土壤固化剂改良土性能研究

RESEARCH ON MONITORING AND MEASURING OF SANDY CLAY TUNNEL CONSTRUCTION UNDER COMPLEX CONDITIONS
复杂环境条件下砂质粘土隧洞施工监控量测研究

Experiment research on consolidation tests of unsaturated silty clay under controlled matric suction
控制基质吸力的非饱和粉质粘土固结试验研究

Correlatability of Microstructure Change and Macroscopical Deformation of Soft Clay Under Subway Load.
地铁荷载下软黏土微结构与宏观变形的相关性

The reinforcement effectiveness of geotextile for soft clay ground under embankment and its dimension effect
堤坝下软基土工织物加筋效果与尺寸效应

The variation rule of expansion ratio of clay under the applied direct current electric field was studied experimentally.
实验研究了外加直流电场作用下粘土膨胀率的变化。

Experimental Study on Soil Moisture Conservation with Chiseling in Clay Soil Under Rainfed Farming Life Depending On Earth
粘质土旱作深松保墒试验研究养生在田土

A Test Research on Longitudinal Wave Velocity of Artificial Frozen Clay Under Different Temperature and Moisture Conditions
人工冻土纵波波速与温度和含水率的关系

A simplified method for consolidation analysis on soft clay foundation with partially penetrated vertical drains under instantaneous preloading is developed.
提出竖井未打穿软土地基下卧层固结度简化计算方法。