n.基岩(松软的沙、土层下的岩石)，牢固基础，基本事实，基本原则

Bedrock is the solid, underlying rock layer that forms the foundation of the Earth's crust.
床岩是地球地壳的基础层，是坚硬的底层岩石。
The construction company began digging down to bedrock to ensure a stable base for the new building.
建筑公司在开始新楼建设前挖掘到基岩，以保证基础稳固。
Geologists study the composition and structure of bedrock to understand the Earth's history.
地质学家研究床岩的组成和结构，来了解地球的历史。
The archaeological team found ancient artifacts buried deep in the bedrock.
考古队在床岩深处发现了古老的文物。
The term "bedrock" is often used metaphorically to represent a solid, unchanging foundation or principle.
("床岩"一词常被比喻为坚实不变的基础或原则。
The excavation workers encountered hard bedrock during their dig, making progress slow.
挖掘工人在挖掘过程中遇到了硬床岩，导致进度缓慢。
The construction project faced unexpected challenges due to the presence of thick bedrock layers.
建设项目因遇到厚实的床岩层而面临意想不到的挑战。
In software development, the term "bedrock" refers to the fundamental code or infrastructure upon which applications are built.
在软件开发中，"bedrock"指应用程序建立的基础代码或基础设施。
The city planners decided to build the subway system on bedrock to minimize the risk of landslides.
城市规划者决定在床岩上建设地铁系统，以减少滑坡的风险。
The hiker reached the summit after scaling the steep bedrock face.
登山者攀爬陡峭的床岩面后到达了山顶。