painstaking

形容词 painstaking:

1. characterized by extreme care and great effort
   同义词：conscientious, scrupulous

1. Planned or executed with painstaking attention to numerous parts or details.
   精心制作的对众多部分或细节给予精心注意的计划或制作的

pains.tak.ing

adj.（形容词）
Marked by or requiring great pains; very careful and diligent.See Synonyms at meticulous
辛苦的：要求极大努力的或以极大努力为特征的；非常仔细和勤奋的参见 meticulous
n.（名词）
Extremely careful and diligent work or effort.
努力：极度细心和勤奋的工作或努力

【引伸】
pains.tak.ingly
adv.（副词）