Come, Watson, I fancy that we may employ ourselves more profitably at home. 阿瑟·柯南·道尔.福尔摩斯归来记.
His will was now, to take the coal out of the earth, profitably. 戴维·赫伯特·劳伦斯.恋爱中的女人.
They did not realize that the demand for cotton cloth was far greater than the supply, and that they could all be profitably employed operating the spinning-jenny. 鲁伯特·萨金特·荷兰.历史性发明.
By the cyanide process, in which cyanide of potassium is used as a solvent for the gold, low-grade ores can be profitably worked. 佚名.神奇的知识之书.
Three or four months were spent pleasantly and profitably by the youth in this course of study, and Edison took to it enthusiastically, giving it no less than eighteen hours a day. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
My time was now well and profitably filled up. 夏洛蒂·勃朗特.维莱特.
But such devices may be profitably used for more peaceful and amusing purposes. 威廉·亨利·杜利特.世纪发明.