其次，研究者证明石器时代的古人类就已经对壳类进行加工。
Next the researchers demonstrated that stone-age humans had meddled with the shells.
这些藏品主要有四类：石器、青铜器、瓷器以及木器。
The collection falls into four major media categories: sandstone, bronze, ceramics and wood.
荷花的美展现在陶瓷器、青铜器、金银器、玉石器、砖雕石刻、壁画藻井等方面，至少有40类以上，品种不计其数。
The image of lotus flower can been seen on chinaware, copperware, gold, silverware, jade article, and brick carving with at least 40 kinds and in large variety.
安徽新石器时代的绘彩陶器可分为彩陶和彩绘陶两类，前者主要分布在淮河流域和皖西，而后者则主要分布在皖西南一带。
The polychrome pottery in the Neolithic Anhui Province can be divided into the painted before fired and painted after fired pottery.
安徽新石器时代的绘彩陶器可分为彩陶和彩绘陶两类，前者主要分布在淮河流域和皖西，而后者则主要分布在皖西南一带。
The polychrome pottery in the Neolithic Anhui Province can be divided into the painted before fired and painted after fired pottery.
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