苦心

Every aspect of the original has been closely studied and painstakingly reconstructed.

原作的每一细节都经过了仔细研究，尽才得以重现。

The boy puzzled his way through geometry.

那男孩研几何学。

The book was the result of ten years’ assiduous research.

那本书是十研的成果。

The capitalist tried to hammer out an agreement with workers on overtime pay.

资方设法和工人达成了一项加班工资的协议。