五一假期：May Day Holiday
在五一假期期间：During May Day Holiday
五一纪念歌曲：May Day Memorial Song
1921年“五一”前夕，在北京的共产主义小组成员邓中夏等人创办的长辛店劳动补习学校里，工人们学唱《五一纪念歌》。其歌词是：“美哉自由，世界明星，拼吾热血，为他牺牲，要把强权制度一切扫除净，记取五月一日之良辰。
On the eve of May Day in 1921, workers learned to sing the May Day Memorial Song at Changxindian Labor Tuition School, founded by Deng Zhongxia, a member of the Communist group in Beijing. Its lyrics are: "Beautiful freedom, world stars, fight my blood, sacrifice for him, to sweep away all the power system, remember the good day of May 1.
红旗飞舞，走光明路，各尽所能，各取所需，不分贫富贵贱，责任唯互助，愿大家努力齐进取。”这首雄壮有力的歌，是由长辛店劳动实习学校的教员和北京大学的进步学生共同创编而成的。
Red flags fly, take the bright road, do their best, take what they need, regardless of wealth or wealth, responsibility is mutual assistance, I hope you all strive to forge ahead. This magnificent and powerful song was created by the teachers of Changxindian Labor Practice School and the progressive students of Peking University.
1889年7月，由恩格斯领导的第二国际在巴黎举行代表大会。会议通过决议，规定1890年5月1日国际劳动者举行游行，并决定把5月1日这一天定为国际劳动节。
In July 1889, the Second International Congress led by Engels was held in Paris. The meeting adopted a resolution stipulating that international workers should hold a parade on May 1, 1890, and decided to designate May 1 as International Labor Day.
中央人民政府政务院于1949年12月作出决定，将5月1日确定为劳动节。1989年后，国务院基本上每5年表彰一次全国劳动模范和先进工作者，每次表彰3000人左右。
The State Council of the Central People's Government made a decision in December 1949 to designate May 1 as Labor Day. Since 1989, the State Council has basically commended the national model workers and advanced workers every five years, with about 3,000 people at a time.
五一假期用英语是May Day holiday。以下是音标
美式音标和英式音标
在五一假期期间during International Workers' Day holiday本回答被网友采纳