最佳答案
单词fall，意思是：v.落下;摔倒;下落;掉落落;跌落;忽然倒下;倾圯;下垂;高扬。n.落下;下落;跌落;掉落落;(雪、岩石等的)降落;产生;秋天（AmE=autumn）。
例句：1.Evans had rheumatic fever, missed school and fell behind伊万斯得了风干冷，没去上课，功课也落下了。
2.The force of her fall was broken by the straw mats. 草垫的缓冲感化减弱了她下落的袭击力。
3.The house looked as if it was about to fall down. 房子看起来仿佛就要倾圯似的。