名词
中文翻译：信
同义词：
['letter', 'missive', 'missal', 'missive']
例句：
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1.He wrote a letter to his friend asking for help.
他给朋友写了一封信，寻求帮助。
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2. The missive was written in a formal tone.
这封信的语气很正式。
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3. She read the missive carefully before replying.
她仔细阅读了回信，然后回复。