光滑
word C2- smooth
Its characters
From the library
不必说碧绿的菜畦，光滑的石井栏，高大的皂荚树，紫红的桑椹；
眼前的一切既熟悉又陌生：石桥还在，只是栏杆被磨得更加光滑；
野生稻自然脱落，留下的断面光滑整齐；
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