The Wilmington expedition has proven a gross and culpable failure. 尤利西斯·格兰特.U.S.格兰特的个人回忆录.
It trebled the output of grain, and the welfare of the people has proven largely dependent on their food supply. 鲁伯特·萨金特·荷兰.历史性发明.
Nay, it is common and proven knowledge with _Gitanos_. 欧内斯特·海明威.丧钟为谁而鸣.
Second--To devise an electric lamp that would give about the same amount of light as a gas jet, which custom had proven to be a suitable and useful unit. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
Even if the canal had proven a success, so far as to be navigable for steamers, it could not have been of much advantage to us. 尤利西斯·格兰特.U.S.格兰特的个人回忆录.
It has been proven conclusively that they can not worship together around the grave of the Saviour of the World in peace. 马克·吐温.傻子出国记.
That Edison did produce speech with solid electrodes before Berliner is clearly proven. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
This is absolutely proven by the exact duplication of the pattern on sets of spoons. 佚名.神奇的知识之书.
We gained an advantage on the morning of the 6th, which, if it had been followed up, must have proven very decisive. 尤利西斯·格兰特.U.S.格兰特的个人回忆录.
Subsequent experience has amply proven the value of Edison's prescience at this time. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
The soul, I said, being, as is now proven, immortal, must be the fairest of compositions and cannot be compounded of many elements? 柏拉图.理想国.
All I have revealed about the Wandering Jew can be amply proven by reference to our guide. 马克·吐温.傻子出国记.