paving stone degeneration retina视网膜铺路石样变性
paving stone degeneration of retina视网膜铺路石样变性
stone paving石块铺砌
stone paving supporters擗石桩
stone block paving小方石块铺面
N(名词) a concrete or stone slab for paving 铺路石; 铺路的混凝土