stalactite

n.钟乳石

stagnate, stagnation, stagy, staid, staidly, staidness, stain, stained glass, stainless, stainless steel, stair, stair-carpet, stair-rod, staircase, staircase (also `stairway), stairs, stairway, stairwell, stake, stake-out, stalagmite, stale, stalemate, staleness, stalk, stalker, stall, stall-holder, stallion, stalwart, stalwartly, stalwartness, stamen, stamina, stammer, stammerer, stammeringly, stamp, stamp album, stamp-collecting,