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1. 你可以打印说明原子或行星等概念的教育模型。

   nǐ kě​yǐ dǎ yìn shuō​míng yuán​zǐ huò xíng​xīng děng gài​niàn de jiào​yù mó​xíng.

   You can print educational models that illustrate concepts such as atoms or planets.

   Source: CCMatrix