get a handle on 掌握
master the skill 精通技能
have control over 控制
be proficient in 熟练于
grasp the concept 理解概念
1. It took him two years to get command of the local dialect.
他花了两年时间才掌握当地的方言。
2. To get command of a new programming language, you need to practice coding every day.
要精通一门新的编程语言，你需要每天练习编程。
3. The manager quickly got command of the chaotic meeting situation.
经理迅速掌控了混乱的会议局面。
4. Students should aim to get command of basic scientific terminology.
学生应该力求掌握基本的科学术语。
A: How is your English learning going?
A：你的英语学习进展如何？
B: I'm making good progress. I hope to get command of business English by next year.
B：我进步很大。我希望明年能精通商务英语。
1) 掌握（语言或技能）
2) 获得控制权
3) 精通
4) 驾驭
1. 掌握；精通；获得对…的控制
e.g.He has got command of several foreign languages.
他精通几种外语。
phrase
1. To have or gain the ability to use a language, skill, or subject effectively and with authority.
2. To be in control of a situation or group.
Synonym: master, grasp, control