短语词组短语painstaking a 劳苦的;艰苦的;苦干的;刻苦的painstaking ĵ 辛勤的Extremely Painstaking 极其辛苦painstaking struggle 艰苦奋斗Really painstaking 真辛苦painstaking effort 心血;辛苦的努力;不辞辛劳的努力 返回 painstaking