the difference between "at front of"and"in front of"

题目

the difference between "at front of"and"in front of"
pleace give examples!

答案

at front of
在.前线
举例：
The human right is at front of debate.
人权问题在激烈的讨论中.
in front of
在.前面
举例：
There is a tree in front of the house.
房子前面有一棵树.