"May Day" Is Airplane SOS
ENGLISH aviators who use radio telephone transmitting sets on their planes, instead of telegraph sets, have been puzzling over the problem of choosing a distress call for transmission by voice. The letters SOS wouldn't do, and just plain "help!" was not liked, and so "May Day" was chosen. This was thought particularly fitting since it sounds very much like the French m'aidez, which means "help me." ["The Wireless Age," June 1923]
英语单词mayday原本是“五月天”的意思，但是在航空业中，它代表着最高等级的求救信号。
1923年，一名名叫费德里克的英国机场无线电高级职员，受命选择一个简单明了的单词，供飞行员和地勤人员在紧急求救时使用。由于当时航班大多来回于巴黎，费德里克选择了与法语m'aider（救命）发音很接近的mayday。这个词读起来琅琅上口，很适合在噪音很大的无线电通讯中使用。这种做法后来成为全球的标准做法，并规定要连续呼叫三次以避免误会。mayday是最高级别的求救信号，表示“飞机即将坠毁”的危急情况。当听到mayday求救信号时，其他飞机都必须及时避让，让遇险飞机优先着陆。
mayday：['me,de] n.五月天，紧急求救信号。
该词的英语词源请访问趣词词源英文版：mayday 词源，mayday 含义。
来自法语m’aider的英语俗化，缩写自venez m’aider,即come help me,来自venez,来，词源同come,venue,m’,我，词源同me,aider,帮助，词源同aid.后用于求救信号。