painstakingly

The archaeologist painstakingly brushed away the dirt to reveal the fragile bones underneath.

(Chinese) 考古学家细心地刷掉尘土，露出了下面脆弱的骨骼。

She painstakingly transcribed the ancient manuscript word by word over several years.

(Chinese) 多年来，她极其细致地逐字抄录了这本古代手稿。