careful
adj.
Old English cearful "mournful, sad," also "full of care or woe; anxious; full of concern" (for someone or something), thus "applying attention, painstaking, circumspect;" from care, n. + -ful.
〔李〕[care n. 小心,关怀;-ful →] a. ①showing care;done with thought and effort细心的;精心的;细致的