名词
中文翻译：情书
同义词：
['love letter', 'missive', 'letter of affection']
例句：
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1. He wrotea love letter to his sweetheart.
他写了一封情书给他的妻子。
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2.She sent a letter of appreciation to the company for their excellent service.
她向公司发送了一封感谢信，以表达对他们优质服务的感激。
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3. The couple exchanged letters of congratulations on their engagement news.
这对情侣交换了订婚喜讯的信件。