v (1) 1)(使)跌倒(落)((cause to) fall suddenly without intending to)[I，I+prep，I+adv，T+n+prep]：The children/kitten～d each other on the floor. 孩子们/小猫互相推来推去倒在地板上。～down the stairs/the hill 从楼梯上/山上跌落下来;～off the bike/the chair/the shelf 从自行车/椅子/架子上跌下来;～out of a tree/a cart 从树上/车上掉下来;～over a step/a sled/a mat 被台阶/雪橇/垫子绊倒;～in a pond/on the ice 掉到池子里/跌坐在冰上;She～d downstairs. 她跌到楼下。～the fruit from the overturned cart 水果从翻倒的车里掉出来;(a sudden braking)～sb down(突然刹车)使某人摔倒;〖同〗fall，roll，stumble; 2)下降，暴跌(drop rapidly in value or amount)[I]：Shares prices/Prices～d suddenly. 股票价/价格突然暴跌。The temperature～d to 3 degrees last night. 昨晚气温下降到3度。〖同〗drop，fall;〖反〗rise，increase;

(2)翻滚(fall or roll end over end)[I，I+prep，I+adv]：(stream)～over the rocks (溪水)滚滚地流过岩石; (breakers) ～onto the shore (浪涛)向岸边打来;The children loved～ing about in the hay. 孩子们喜欢在草垛上打滚。

(3)乱糟糟地急忙跑进(出) (go，come，get，etc in a hasty and confused way)[I+prep(into/out of)，I+adv (in/out)]：～into bed/clothes 匆匆上床睡觉/穿衣服;～into/out of the bus 一窝蜂地钻进/跳出汽车;Three baby birds/A pile of old books/Everything in the basket～d out. 三只小鸟一窝蜂地飞了出来/一堆旧书呼拉拉掉了出来/篮子里的所有东西都掉了出来。

(4)拢(弄)乱(put in a disordered condition)[T+n，T+n+adv]：～one's hair/one's clothes/one's sheets 搞乱了头发/衣服/床单;

tumble down (v adv)倒塌(vi)：The old house is～ing down. 这座老房子快要倒了。

tumble to (v prep)了解，领悟(vt)(infml)：～to what sb meant/sb's plan 领悟某人的意思/了解某人的计划;

n (1)跌落(倒，跤);倒塌(sudden fall)[C]：have (take) a nasty～on the stairs 在楼梯上重重地摔了一跤;The～hurts him badly. 他摔了一跤，伤得不轻。

(2)混(凌)乱(condition of confusion or disorder)[U，a～]：bed clothes in a～on the bed 床上凌乱的被褥;A～of books and papers covered the desk. 书和报纸凌乱地摊在桌上。

→′tumbledown adj 倒塌的;′tumble-drier n 滚筒式烘干机;′tumbleweed n 风滚草