A mastery of a field of learning may undergo recognition.Logical formLearned from2 sentences. A scientist may show a mastery of a subject.Logical formLearned from2 sentences. Persons may have a mastery of a subject.Logical formLearned from2 sentences. Mastery can be over a future.Logical formLearned from2 sentences. Persons can be worried about an attitude of mastery.Logical formLearned from2 sentences. A student may achieve mastery.Logical formLearned from2 sentences. A mastery can be constituted-of-or-filled-with (office skills).Logical formLearned from2 sentences. Mastery of material may be assumed.Logical formLearned from2 sentences. An expert can be with mastery.Logical formLearned from2 sentences. An exam may test a mastery of literature.Logical formLearned from2 sentences. Mastery may pertain-to a major.Logical formLearned from2 sentences. Mastery of concepts may require a commitment.Logical formLearned from2 sentences. Attempts may lead to mastery.Logical formLearned from2 sentences. An atlas of drawings may give testimony to a mastery of drawing.Logical formLearned from2 sentences. (Examination questions) may require mastery of techniques.Logical formLearned from2 sentences.