master
/ˈmɑ:stə(r); ?@ ˈms-; `mæstɚ/ v[Tn]
1 gain control of (sth); overcome (sth) 控制, 制服（某事物）
master one's temper, feelings, etc 控制住脾气、 感情等.
2 gain considerable knowledge of or skill in (sth) 掌握, 精通（某事物）
master a foreign language 掌握一门外语
She has fully mastered the technique. 她已完全掌握了这种技术.
He has mastered the saxophone. 他已精通萨克管的演奏.