Fallak法拉克fallv.落下；倒下；来临n.秋天；落下；瀑布fall off the staircase摔下楼梯falling characteristic降落特性fall into a deep sleep酣睡falling-film reactor降膜式反应器falling ball viscosity落球粘度fallen all over myselfv.跌倒(极想)fall into company withv.偶然结识fall among Philistines大吃苦头, 倒大霉fall into contact with同fall into a difficulty陷入困难

fall in塌陷； 同意； 集合； 排队； 掉入； 跌入