sandstone

n [U] rock formed of compressed sand 沙岩.

sand, sand trap, sand-bar, sand-blast, sand-castle, sand-dune, sand-fly, sand-pit, sand-shoes, sand-yacht, sandal, sandalled, sandalwood, sandbag, sandbank, sandboy, sandiness, sandpaper, sandpiper, sands, sandstorm, sandwich, sandwich board, sandwich course, sandy, sane, sanely, sang, sang-froid, sangria, sanguinary, sanguine, sanguinely, sanguineness, sanitarium, sanitorium, sanitary, sanitary towel, `sanitary pad, sanitation, sanitize, sanitise, sanity,