It takes years to gain a mastery of Japanese.
握日语要花几年时间。
To gain a complete mastery of English, one must study very hard.
要想精通英语就必须刻苦努力。
His work demonstrates a mastery of design, colour, composition and draftsmanship.
塞尚的设计、色彩、布局和描绘都十分出色。
She appealed to his mastery for help in solving her problem.
她请求他运用他的知识去解决她的问题。
He shows complete mastery of his chosen subject.
他精通自己选择的那门科目。
Only practice can achieve mastery.
只有实践才能达到精通。
He was always making diagrams of verbs and their inflections, and he looked for opportunities to show off his mastery of the pluperfect and future perfect tenses, his two favorites.
他总是把动词及绘制成表，然后便寻找机会炫耀他的两个最爱——过去完成时和将来完成时。
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