black out是什么意思？

black out的音标：black out的英式发音音标为：[blæk aut]black out的美式发音音标为：[blæk aʊt]...

I suffered a black-out which lasted for several minutes.我昏迷了几分钟。There was an electricity black-out in a large area in the north of the country.该国北部大片地区断电。I could feel blood draining from my face. I wondered whether I was...