mastery /ˈmæstəri/ /ˈmɑːstəri/ noun /ˈmæstəri/ /ˈmɑːstəri/
noun
Learner's definition of MASTERY
1
: knowledge and skill that allows you to do, use, or understand something very well : command熟练;精通 —
usually + of [noncount]
[singular]
2
[noncount] : complete control of something完全控制;驾驭