Happy International Workers' Day
happy是什么意思：
adj. 高兴的；使人高兴的；情愿的；放心的；幸运的；恰当的
Health is happiness
健康就是幸福
Content is happiness
知足常乐
Then Zara was happy.
然后扎拉就高兴起来了。
labor是什么意思：
n. 劳动；工作；劳工；英国工党
v. 劳动；费力地前进
It is a scientific labor.
这是一项艰巨的科学工作。
He is satisfied with your labors.
他对你干的活儿很满意。
Genius is nothing But labor and diligence.
天才不过是勤奋而已。
day是什么意思：
n. 一天；白昼，白天；工作日；时代，时期
Things go on day by day.
事情逐日进行着。
Day by day the situation is improving.
情况在一天天地好转。
Like this, day after day.
就这样，日复一日。
例句：
祝大家劳动节快乐！
Happy labour's holidy to you all!
在“五一国际劳动节”到来之际，愿孩子们拥有一个快乐的、精彩的假期！
The expected May Day holiday is juest around the corner. I'd like to wish all of you a wonderful, outstanding, cheerful and splendid holiday!
I wish you a happy Labor Day! Come true! Happy work! I will always support you!
祝你劳动节愉快！心想事成！工作开心！我会永远支持你的！