دانش، علم ، تبحر، توانایی،
Have mastery , have the ability to use or control
Knowledge of something especially a language or ability to use something
He has a remarkably command of English.
She has a good command of her emotions
Have mastery , have the ability to use or control
Knowledge of something especially a language or ability to use something
He has a remarkably command of English.
She has a good command of her emotions