storm-cloud

n (a) large black cloud coming with a storm or indicating that a storm is likely to happen 暴风云（暴风雨时出现的或预示暴风雨将至的浓密的乌云）.(b) (usu pl 通常作复数) (fig 比喻) sign of sth dangerousor threatening 危险的迹象; 凶兆: storm-clouds of war gathering over Europe 笼罩著欧洲上空的战争乌云.

stoppage, stopper, stopping, stopping train, stopwatch, storage, storage heater, store, store up, store-room, storehouse, storekeeper, storeroom, storey, storey (US story), stork, storm, storm petrel (also stormy petrel), storm-bound, storm-centre, storm-door, storm-lantern, storm-tossed, storm-trooper, storm-window, stormily, storminess, stormproof, stormy, stormy petrel, story, story-book, story-teller, stoup, stout, stout-hearted, stouthearted, stoutly, stoutness, stove,