painstaking

It took months of painstaking research in the archives to uncover the truth about the lost shipwreck.

(Chinese) 在档案室里进行了数月极其细致的研究，才揭开了这艘沉船失踪的真相。

The restoration of the ancient fresco required painstaking attention to every tiny flake of paint.

(Chinese) 修复这幅古代壁画需要对每一小片油漆进行极其细致的关注。