英语语法分析

Obama would do well to avoid such scapegoating.

奥巴马将会做得更好，不会成为那样的替罪羊。

Scapegoating. You imply that the other person is defective or inadequate.

暗示他人是有缺陷和不足的。

So, though scapegoating works, beyond a certain point it gets rather costly.

所以，尽管找替罪羊这招儿肯定奏效，但做得过火了的话代价会很高。