[명사] (경기용) 허들[장애물
Most competition cars will only roll over if they hit an obstacle
[유의어]difficulty곤란, 어려움, 곤경, 어려운 일, 난국
the difficulty of getting accurate information
Villagers say the fence would restrict public access to the hills.
[유의어]barrier방벽, 장애, 방책, 국경의 요새, 관문
Duties and taxes are the most obvious barrier to free trade