1791, originally "habitually falling down" and used first of horses, from tumble (v.) + down (adv.); in reference to buildings, "in a dilapidated condition," from 1818.
权威例句
1. He injured his ribs in a tumble from his horse.
他从马背上摔下来时伤到了肋骨。
2. Share prices continued to tumble today on the Tokyo stock market.
东京股市的股价今天继续暴跌。
3. Many mothers and children tumble into poverty after divorce.