one's own master
美
英 
例句
To be one's own master, one has to stay calm and composed amidst both favourable and adverse situation.
人要成为自己的主人,则无论处顺境或逆境,都要沉著.。
An analysis of feed system design of an economical revolving cut machine is made on one's own master development .
对自主开发研制的经济型旋切机进给系统的设计进行了分析。