He is proficient in both languages

精通───master

The master left his money with a trusty servant.───主人把他的钱交给一个可靠的仆人保管.

Every profession produces its own topmost master.───行行出状元.

He is a master at circumlocution.───他讲话很会兜圈子.

She learned Latin without a master.───她无师自通学会了拉丁语.

Elephants like to have one master just as dogs do, and are capable of a considerable degree of personal affection.───大象正像狗一样,喜欢专一的主人, 而且能够有相当程度的个人感情.

Pamela is nobody's fool ; she'll master her new job in a couple of days.───帕梅拉精得很, 她会在一两天内胜任新的工作.

It is simply a fantastic imagination to conceive that one can master a foreign language overnight.───幻想在一天早晨就把外语学好,那只是白日作梦.

He saw himself as a Master of the Universe, an avenger of wrongs.───他把自己当成宇宙的统帅，惩治万恶。

A great poet is a master melody.───大诗人也是音律大师.

He was the Master of King's College, Cambridge.───他曾是剑桥大学国王学院的院长.

Runyon was a master of the short story.

Every man is the master of his own fortune.

The dog obeyed his master.

Money is a good servant, but a bad master.

Jack of all trades and master of none.

He considered himself a master of witty banter.

A Jack of all trades and master of none.

I'm afraid the master is away on business.

For man is man and master of his fate.