工夫たちは坑道をさらに奥へと掘り進めた。
The laborers dug further into the mine shaft.
線路の点検のため、夜中に工夫が集められた。
Workmen were gathered in the middle of the night to inspect the tracks.
祖父は若いころ、ダム建設の工夫として働いていた。
In his youth, my grandfather worked as a laborer on a dam construction project.