obstacle
/ˈɒbstəkl/noun
- a thing that blocks one's way or prevents or hinders progress障碍（物）：
the major obstacle to achieving that goal is money.
达到那个目标的主要障碍就是钱。
词源
Middle English: via Old French from Latin obstaculum, from obstare 'impede', from ob- 'against' + stare 'stand'.