mastery
/ˈmɑːstərɪ/noun
mass noun
1
- comprehensive knowledge or skill in a subject or accomplishment精通, 熟练：
she played with some mastery.
她弹得颇为熟练。
1.1
- the action or process of mastering a subject or accomplishment掌握：
a child's mastery of language.
小孩对语言的掌握。
2
- control or superiority over someone or something控制, 统治：
man's mastery over nature.
人对自然的控制。
词源
Middle English: from Old French maistrie, from maistre 'master'.