carefully between class preview
上课之间认真预习 » Carefully between class preview 不要伤心不要难过振作起来战胜烦恼认真学习天天向上 » Don't cheer up sad not sad overcome troubles to seriously study and m...
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carefully between class preview
课间认真预习
以上为机器翻译结果，长、整句建议使用 人工翻译 。