painstaking effort英语标准发音：painstaking effort英式发音：美式发音：翻译中文苦心经营painstaking effort - 基本释义[词典1]心血painstaking effort - WEB词典painstaking effort心血辛苦的努力不辞辛劳的努力Mastermind with painstaking effort苦心经营require painstaking effort非下苦功不可 参考资料： 1.百度翻译：painstaking effort2.有道词典：painstaking effort3.爱词霸：painstaking effort
