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。
However, there is an even more insidious kind of pollution that particularly affects urban areas and invades our daily lives, and that is noise.
但是,还有一种更加隐蔽有害的污染,它专门影响城镇地区,侵袭我们的日常生活,那就是噪音。