劳动节或五一节

for a rainy day───以备不时之需

May is the fifth month of the year. Labour Day, or May Day, is on May 1st. People sing and dance.───五月是一年里的第五个月。劳动节，或五一国际劳动节在五月一日。人们载歌载舞庆祝五一国际劳动节。母亲节也在五月。