sediment
n. 沉淀物,沉渣;(最终形成岩石层的沙、石等)沉积物; v. (液体)沉淀;沉积
n.沉淀物,沉积
antithyroid bedouin chested commissar metaphysics thetford unserviceable下载迅蛙App
n. 沉淀物,沉渣;(最终形成岩石层的沙、石等)沉积物; v. (液体)沉淀;沉积
n.沉淀物,沉积
antithyroid bedouin chested commissar metaphysics thetford unserviceable