Enrichment involves learning information that falls outside the usual curriculum—say, investigating a topic in greater depth or finding out about new topics.
扩展宽度的意思就是学习普通课程以外的知识，比如深入研究一个课题或者寻找新课题。
2
These can guide the prospecting work of gold in depth and the finding of same deposits in region.
利用这些规律可指导该矿床深部的找矿工作及区域上同类型矿床的寻找。
3
When you've discovered where the problem areas lie, you can test them to greater depth as a way of helping the developers raise the quality by finding the important bugs.