短语
中文翻译：Unknown
同义词：
['a bolt from the blue', 'a sudden stroke of luck', 'a surprise turn of events']
例句：
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1. He was so surprised when he received a phone call from a friend who had just landed a big job offer.
他接到一个电话，朋友刚刚得到了一份大工作邀请，他非常惊讶。
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2.She was delighted to receive a gift from her best friend, who had been away for a year.
她收到来自一年未见的朋友的礼物时非常高兴。
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3. The unexpected news that she had won the lottery changed her life overnight.
她意外地赢得了彩票的消息让她的生活一夜之间发生了翻天覆地的变化。