9视频豆瓣9.1
11视频豆瓣6.3
20视频
1视频
2视频豆瓣6.1
13视频豆瓣7.0
这位勤奋的学生坐在一张装饰着大量数学书籍和可靠计算器的木桌旁,以坚定不移的专注和决心做着笔记。
Seated at a wooden desk adorned with a multitude of mathematical books and a trusty calculator, the diligent student makes a note with unwavering focus and determination.
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