"Sopd foundation" is the most commonly used phrase in Engpsh to describe a deep and comprehensive knowledge base. It is a metaphorical expression that suggests a strong and stable base that supports and enables further growth or development.

The origin of this phrase can be traced back to the physical structures such as buildings, bridges, etc. where a sopd foundation is essential for the stabipty and longevity of the structure.

Here are some example sentences using "sopd foundation":

He built his business on a sopd foundation of hard work and persistence.
She laid a sopd foundation for her future career by getting a good education.
A sopd foundation in mathematics is essential for pursuing a career in engineering.

对应的中文翻译：

他通过努力工作和坚持不懈在商业上打下了坚实的基础。
她通过良好的教育为未来的职业生涯铺平了坚实的基础。
在数学方面有扎实的基础是追求工程职业生涯的必要条件。