painstaking
US /ˈpeɪnzˌteɪ.kɪŋ/
UK /ˈpeɪnzˌteɪ.kɪŋ/

1.
艱苦的, 細緻的, 煞費苦心的
done with great care and thoroughness
:
•
The artist made a painstaking effort to capture every detail.
這位藝術家付出了艱苦的努力來捕捉每一個細節。
•
It took years of painstaking research to complete the book.
完成這本書需要多年的艱苦研究。