out of the blue的英文翻译是什么意思，词典释义与在线翻译：
"unanticipated and disconcerting lines of development"
"a virtue unlooked-for in people so full of energy"
"like a bolt out of the blue"
in a way that was not expected;
"her brother showed up at the wedding out of the blue"
out of the blue的用法和样例：
- His resignation came right out of the blue.
- Out of the blue, he opened up a business.
out of the blue的相关资料：