1) May Day
"五一"期间
2) 1st.-7th. May
五一期间
3) Five
五
4) the Fifth Five-Year Project
“五五”工程
1.
Practice and Effect of the Fifth Five-Year Project of Exploration for Oil and Gas in Daqing Oilfield;
大庆油田油气勘探“五五”工程的实践与效果
5) Five stalk five-axs move
五轴五联
6) the five elements mixing five
“五行配五”
参考词条
补充资料：三一回五一回
1.犹言三番五次。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。