The?Trump administration?will send a message?to all US mobile phones on Thursday, as it tests an unused alert system that warns the public about national emergencies.
特朗普政府將于本周四向全美手機用戶發(fā)一條信息，用以測試還未投入使用的緊急警報系統(tǒng)。

Phones will make a loud tone and have a special vibration according to the?Federal Emergency Management Agency (FEMA), which will send the alert.
據(jù)聯(lián)邦緊急事務管理署稱，警報發(fā)出時，手機會發(fā)出巨大的聲音并會伴有一種特殊的震動。

The test message will be headlined “Presidential Alert” and will go on to read?“THIS IS A TEST of the National Wireless Emergency Alert System. No action is needed.”
這一信息將以“總統(tǒng)級警報”命名，信息的內容為“這只是一條來自國家無線警報系統(tǒng)的測試信息，無需采取任何行動.”

US mobile phone users will not be able to opt out of the test.
所有移動手機用戶都必須接受此項測試。

Former?US president Barack Obama?signed a law in 2016 which required FEMA to design a system where the president could send mobile phone alerts in national emergencies.
美國前總統(tǒng)奧巴馬于2016年簽署一項法令，要求聯(lián)邦緊急事務管理署設計一套系統(tǒng)，以便總統(tǒng)可以向全民發(fā)送緊急事件的警報。

The president has responsibility?for deciding when the nationwide alerts are used.
總統(tǒng)有權決定何時發(fā)布警報。

FEMA has issued more than 36,000 mobile phone alerts since launching a wireless emergency system in 2012.
自2012年以來，聯(lián)邦緊急事務管理局已經向超過3000部手機發(fā)出過該無線警報。

The messages have varied from alerts about natural disasters and extreme weather?to notifications about missing children.
據(jù)悉，這些信息的內容包羅萬象，十分多樣，大到自然災害、極端天氣，小到兒童失蹤都包括在內。

（翻譯：進擊的Meredith）