out of the blue
out
aʊt
awt
of
əv
ēv
the
ðə
dhē
blue
blu:
bloo

“out of the blue”的英语定义和含义

out of the blue
01

occurring without prior warning 

例子
The invitation to the party came out of the blue, and I couldn't believe my luck. 
out of the blue
01

出乎意料地, 突然

in a way that was not expected 
语法信息
02

突然, 出乎意料地

being quiet or still or inactive 
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