rain cats and dogs

下倾盆大雨

raging, raglan, ragout, rags, ragtag, ragtime, ragweed, ragwort, raid, raider, rail, railhead, railing, raillery, railroad, railway, railway-line, railwayman, raiment, rain, rain forest, rain out, rain-check, rain-gauge, rain-swept, rain-water, rainbow, raincoat, raindrop, rainfall, rainforest, rainless, rainproof, rainy, raise, raise...out of, raisin, raison d'etre, raj, rajah (also raja),