mayday

noun

1. （船只或飞行器遇险时用的国际无线电求救信号）
   an international radio signal used by ships and aircraft needing help when they are in danger

1. N-COUNT (飞机或船只遇险时发出的)无线电呼救信号
   If someone in a plane or ship sends out a Mayday or a Mayday message, they send out a radio message calling for help because they are in serious difficulty.
   1. He raced to pick up the lifejackets while his stepmother sent out a Mayday call.
      他的继母发出无线电求救信号的时候，他飞跑着去拿救生衣。
2. （无线电求救信号中的求救内容）“求救！求救！”
   'Mayday! Mayday!' is the phrase that is used in Mayday messages to indicate that help is needed.

1. He raced to pick up the lifejackets while his stepmother sent out a Mayday call.
   他的继母发出无线电求救信号的时候，他飞跑着去拿救生衣。
2. As we all know MayDay is national legal holiday.
   当我们全部知道救难信号是国家的法定假日之时。
3. That's the purpose of MayDay – a grassroots effort whose goal is to save our archives.
   这就是灾难救援&一种草根力量，其目标就是拯救我们的档案。
4. Employees of Google and their family members have donated over$ 100,000 to Mayday, making it one of the most popular recipients of their donations.
   该组织从谷歌的员工和他们的家人那里得到了超过10万美元的捐款，是最受他们欢迎的捐款收受者之一。
5. The most important thing is to do something on MayDay that will help save our archives.
   最重要的是做一些有关灾难救援的事情有助于拯救我们的档案。
6. The position given in MAYDAY not correct.
   遇险时给出的遇险位置不正确。
7. We'd also like to track who has participated in MayDay activities and what you did.
   我们也会跟踪报道一些参加灾难救援活动的人以及您所做的事情。

noun

1. an internationally recognized distress signal via radiotelephone (from the French m'aider)