Later, ivory plant gradually replaced by plastic, because plastic lower production costs in addition to making some small souvenirs, plants ivory almost been forgotten, but now it slowly back.
后来植物象牙逐渐被塑料所取代，因为塑料制作成本更低。除了制作一些小纪念品外，植物象牙几乎被人们遗忘了。但现在它又慢慢地回来了。
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