fell down和fell off的区别

区别就是两者意思是不一样，具体的不同如下

fell down中文意思是

(向下游)流下〔美俚〕失败跌倒同“fall”

fell off中文意思是下降(从马上)掉下来扫兴颓丧离开

例句The bandage gradually unwound and fell off.绷带逐渐松开脱落了。