May Day originated in Chicago city workers strike.
劳动节起源于芝加哥城市工人罢工。

7'

To commemorate this great labor movement, on July 14, 1889, Engels, organized and held by the inaugural meeting of the Second International.
On the conference, attend meeting to represent the consistent approval:Common festival that May 1 settles for the international labourer.
为纪念这次伟大的工人运动,1889年7月14日,恩格斯,组织和举办的第二国际成立大会。
大会上，与会代表一致同意：把5月1日定为国际劳动者的共同节日。

25'

From now on, every time round this international community labors the people to all want the parade to show to celebrate.
从此，每逢这一天世界各国的劳动人民都要集会、游行，以示庆祝。

12'

originate 发源；起源
strike 打，击，撞
commemorate 庆祝 为...举行纪念活动
Engels 恩格斯
inaugural 就职，首次的
labour 劳动
labourer 工人