熟练掌握的英语

deep understanding ofwell disciplinedhave a basic command of

了解 know理解 understand熟练掌握 on top of 掌握 master/handle基本掌握 basically master/handle

熟练掌握 [词典] on top of; [例句]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.

A deep understanding of.....have a good master of/in....have proficient skill in...