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此外，笔者曾看到一颗用重晶石制成的所谓夜明珠。
In addition, I have seen one made with barite the so-called glowing pearl.
youdao
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笔者也看到过一些关于植物能净化空气的文章。
The author also has seen a few can purify airy article about the plant.
youdao
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笔者也看到过一些关于植物能净化空气的文章。
The author also has seen a few can purify airy article about the plant.
youdao