A barrier to doing sth

• 做某事的障碍

A barrier to doing sth的用法和样例：

例句

1. Constantly changing regulations and general high cost in doing business are formulable obstacles.
   税收规则经常改动以及做生意总成本的过高成了难以逾越的障碍。
2. There was an impassable barrier between the white race and the one which they had reduced to slavery.
   在白色人种和被他们奴役的种族之间有一道不可逾越的障碍。