晴风浪子
有一点经验就用experiences with或者knowlege of有实操经验就说hands-on experiences in稍微熟悉一点就讲familiar with有大量经验就说extensive sth. experiences in很自信觉得自己老牛逼了就说expert on或者proficient in或者strong knowledge of以上都是跟着感觉走，从上往下技能掌握得越来越厉害
叶子青了
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.
