这些小磁铁代表了不同的作业。当时钟指针到达并收集了这些磁铁，就该交作业了。
Small magnets represent different assignments. When the clock hand reached and collects the magnets - the assignments are due.
当时钟指针到达并收集了这些磁铁，就该交作业了。
When the clock hand reached and collects the magnets - the assignments are due.
当时钟指针到达并收集了这些磁铁，就该交作业了。
When the clock hand reached and collects the magnets - the assignments are due.
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