fell down 和come down 的区别

fall down 是 倒塌; 跌倒 跟 失败

例句：

Many buildings fell down during the earthquake.

在地震中许多楼房倒塌了。

Babies often fall down when they learn to walk.婴儿在学走路时经常摔倒.

His plans have fallen down.

他的计划失败了。

come down 是 下来 倒下 下落 ==

例句：We go up and come down by lift. 我们乘电梯上下