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She learns history, of the U.S. and of Europe, about the mail systems.
她学习了美国和欧洲，关于邮件系统的历史。
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$firstVoiceSent
- 来自原声例句
She learns history, of the U.S. and of Europe, about the mail systems.
她学习了美国和欧洲，关于邮件系统的历史。
应用推荐