Over 5,000 hours of work went into this software, and today it's my privilege to bring it to you.
这种软件的研制超过5000工作小时,今天我很荣辛地向你们展示它。
lack of physical and mental energy, both of which are essential in turning out and throwing away, and sentiment.
一是体力,精力均告不佳,这二者是清除无用的东西必不可少的因素;另一原因是感情因素。