英语 深刻理解，熟练掌握，一般掌握，怎么说？

深刻理解英语：profound understanding。
例句：

1：沃尔什先生深刻理解选民最为关注的事项。
Mr Walsh has a keen appreciation of the priorities of the electorate 。
2：这部小说给我最大的教育意义则是一种对农民的深刻理解。
The novel gave me the greatest significance of education is a profound understanding of the farmers.
3：显示出通过的长期学习获得详细的知识和能够深刻理解。
Showing profound and detailed knowledge and understanding as from long study.
4：所以说深刻理解恐惧和理智之间的这种不平衡关系对于美国自治的设计是至关重要的。
Understanding this unequal relationship between fear and reason was crucial to the design of American self-government.
5：对于许多简单情况，不需要对这些概念的深刻理解。
For many simple situations, a deep understanding of these concepts is not
熟练掌握英语：Mastery。
例句：
1：熟练掌握信息管理和信息系统方面的基本理论、基本知识、方法和技能；
The student should grasp the theory, knowledge, methodology and technique in information management and information system.
2：熟练掌握了计算机的基本理论与应用技术。
Controled the basic theories and the application techniques of the calculator