fall off fall over fall behind fall down 区别的

fall off 、fall down、 fall over区别 fall off fall over fall behind fall down 区别的 fall over fall off fall down 请求翻译 fall down fall off all over fall on falling 这几个词的区别.题目再清楚些fall down fall off fall over fall on falling fall over a bike还是fall off a bike啊? fall off fall from fall down fall fall off fall from fall down fall 请问：fall down,fall over,fall off有和区别?主要讲讲搭配！ A.fall over B.fall off C.fall down这三个词什么意思和区别 fall down,fall over,fall off有和区别?谢谢! 主要讲讲搭配! fall down. fall through. fall over. fall on 区别 英语fall down,over ,off有什么区别? What's the difference between fall off,fall down,and fall over?Please tell me in details.Thank you! fall off的用法 fall off the fall off 么意思? fall over 什么意思? fall over 的意思