稻壳
word C2- rice husk
Its characters
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在浙江浦江的上山遗址，考古学家发现，大约一万年前的陶片里夹杂着大量稻壳。
当时的人很可能已经在采集、甚至尝试种植稻子，并把脱下来的稻壳掺进陶土里，让陶器更结实。
到了距今约七千年的河姆渡遗址，出土的稻谷、稻壳和稻草层层堆积，有的地方厚达几十厘米。
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